Mac diagnostics, or how to independently detect hardware problems on Apple computers. Mac Diagnostics
Given the fact that smart guys are increasingly offering to buy a brand new Macbook at a very good price, I decided to write this text. In it, I will tell you how to understand exactly what you are buying for your hard-earned money.
Quite often lately they called me and asked what they had with a brand new macbook. In some cases, there was a rather interesting, but no less sad precedent for the owner. Most often there was such a situation - the victim was looking for a cheaper place to buy a brand new MacBook. Of course, last but not least, the search went to flea markets like Avito. There was a vendor there offering a top-of-the-line laptop at a price far below our official retail. At the first inspection, everything was as it should be. The laptop is packed, in a film, when opened, the cloth lay on the keyboard as it should. Opening the “Ow this Mac” window also showed the maximum configuration. The happy buyer gave his money and went home reassured. But it was not there…
In fact, the configuration turned out to be far from the one that the unlucky comrade bought. In all cases, these were the cheapest Macs. The guys just cheated the system and wrote what is installed in the maximum configuration. I will not explain how this is done, I will only say that this is a matter of 10-15 minutes. And your dead macbook turns into an ultra-modern monster ... But fortunately, there is a way to make sure and see exactly what you give your money for. He is the only one whose result cannot be influenced in any way. 
I think some have heard about such a thing as the Apple Hardware Test. It is needed by Apple service repairers to diagnose the problem. But it can also serve us very well. All that is required for this is to press the D button when loading (in some cases Cmd + D). Then we get into such a window. Russian is also available. We press next. 
This is where all the information about the hardware of the laptop is available to us.
As we move through the tabs, we can see the section we're interested in: (Interestingly, on my MacBook Pro, the Retina shows the screen resolution that's currently set in settings, not the actual 2800x1800 pixels.) 
You can also click the "Test" button and check the filling of the computer in order. During the test, the coolers accelerate to maximum speed for a while, there is nothing to be afraid of. 
After the end of the test, you will be given an answer whether it is worth transferring money to the seller. 
That's all, I hope this little guide will save you from spending your hard-earned money for no one knows what.
Today we will talk about collecting diagnostics in macOS
Information about the computer and programs
If you select "About This Mac" from the Apple menu and then click the "System Report" button, you'll see a bunch of information about your computer. So, the system_profiler utility is the same, but a hundred times more detailed.
If you call system_profiler without parameters, then the information will be displayed in its entirety, which in my case means 3.8 MB of text. So I recommend immediately writing something like system_profiler > ~/Desktop/profile.txt or using grep to find the line you need.
Among what system_profiler will spit out, you will find information not only about the system and devices, but also about all programs, drivers, plugins, libraries and fonts. At the same time, parts of the system logs and a bunch of other crap will be displayed.
If all this does not interest you, write system_profiler -detailLevel mini, and then you will get only information about the computer.
You can also add the -xml parameter to make it more convenient to process the received information in the script.
Directory Service
The dscl - Directory Services Command Line utility is responsible for communicating with the directory service; it once replaced netinfo. Breathed in sysadmin tricks? This is true, and we will not dwell on them in detail.
For starters, a couple of commands: dscl . -list /Users will list all users and dscl . -read /Users/<имя пользователя>- information about the user in the form of XML. Even a file with an avatar is encoded inside!
By the way, if you run dscl without parameters, it will enter interactive mode, where you can use the usual cd and ls commands to navigate, and view the contents of the branches with the read command.
Directory Services Caches and User List
Another utility is attached to dscl - dscacheutil, it is responsible for working with directory service caches. You probably know it much better than dscl, because for a long time it was the one you had to run to flush the DNS cache.
By the way, in the latest versions of macOS this does not work, and instead of dscacheutil -flushcache you now need to write killall -HUP mDNSResponder.
As for dscacheutil, it's handy to use to list users: dscacheutil -q user. Unlike what dscl produces, the result is much easier to read.
Reading and (not) resetting values in NVRAM
Every Mac has a non-volatile memory that stores variables that are important to the operation of the computer. What exactly is there? The nvram command will help you find out: write nvram -xp, and you will see everything.
There are innocuous things like the sound level and the latest keyboard layout, as well as more interesting things like the Find My Mac key and the completely mysterious EFI settings.
All of them are presented in binary form, and the only snippet of description that I could find is contained in a leaked CIA document posted on WikiLeaks.
Parameters can be set with the nvram command<переменная>=<значение>, delete with nvram -d command<переменная>or load from file with nvram -f<файл>.
You can reset everything by typing nvram -c. But usually NVRAM parameters are reset only if something went wrong and the computer does not boot. To do this, press Alt-Cmd-P-R immediately after switching on and hold for 20 s.
Please note: if you change the parameters with the nvram utility, then they will not be written to non-volatile memory immediately, but only when the computer is turned off in normal mode.
RAM statistics
There are many ways to see how loaded the RAM is. Perhaps the easiest is to open the "Memory" section in "System Monitoring": the most useful parameters are presented there in a visual form. From the command line, it's best to use top.
If you need the most detailed information, then you can refer to vm_stat. The disadvantage of this utility is that all values are given in pages equal to 4 KB. However, it's not that difficult to calculate, and there are a lot of scripts on the Internet - for example, this Perl one-liner converts everything into megabytes.
You can also use vm_stat to track changes in memory usage over time. To do this, type vm_stat -c<число> <секунды>, where the first parameter is the number of measurements, and the second is the interval between them.
Flush disk cache in memory
The purge command helps to temporarily get a couple of extra gigabytes of RAM. It is called from root, has no parameters and resets the disk cache, bringing it to the state it was in after the OS was loaded. But usually the memory manager does not need such help - he himself will gradually unload the excess if the RAM runs out.
The help says that purge is generally needed mainly for testing, but who knows how life will turn out?
File system access tracking
The fs_usage command, run without options as root, prints a record of every filesystem access. This is needed in cases where some program crashes on startup or produces cryptic error messages. If the problem is that one of the files is corrupt, then you can find it with fs_usage.
To reduce the need to rummage through the output, limit the messages to one process by writing its name after fs_usage. If you only know the ID, type sudo fs_usage pid .
Another useful parameter is -f, after which you can set a filter for network operations (-f network), files (-f pathname will add a path column) and so on. If the text doesn't fit on the line, add -w.
It's good when the Mac works like clockwork. But it's not forever. As seasoned Mac drivers, we carry the same laptop with us for years on end, changing it to a new one only in exceptional situations. For example, if there are problems with the hardware - overheating and loss of OS stability. To prevent or correct this, it is worth maintenance.
It's time for me to write a book about how to most successfully get into seemingly intractable situations. Most recently, I wrote about how I got into a stalemate with a burned-out cable, which forced me to urgently look for a laptop repair service. The current situation is little better.
I came to Moscow for a few days on a working visit just in time for the spring presentation of the Apple Watch. That evening, the work process was in full swing, and the posts poured in one after another. Finishing work on the next news, I noticed: the laptop began to behave incomprehensibly. He had been unusually hot for several days and was buzzing loudly with coolers. And now the system hung every now and then, although nothing resource-intensive happened.
In the morning, everything got really bad: after a short run on the Web, the computer suddenly turned off. To the touch - just fiery. The next day, Nikita and I were going to look into iCases on Taganka, and, in addition to the planned cases, we decided to take my Mac for diagnostics at the same time. There is nothing to loose.
A master named Igor took my working tool and took it to the holy of holies of any repair service. While Nikita was collecting gadgets for the next batch of reviews, I also decided to look inside my own laptop.
The first thing the master asked was how long ago I carried out prophylaxis. To be honest, I was taken aback and answered in the negative. For some reason, I was sure that the problem with the laptop was purely software. After all, I never dropped it, did not flood it, and generally tried to be careful. Igor smiled condescendingly and proceeded to loosen the screws.
First, he cleaned the air vent of the MacBook. If anything, it is located between the rotary mechanism of the display and the main part of the body. It was thoroughly stuffed: probably because I like to take my laptop to bed, I often leave it on the bed and under the “sheep” blanket.
Secondly, the master removed dust from the cooler - the fan next to the Mac processor. The fact is that clogged ventilation meshes lead to overheating of the laptop and to malfunctions in its operation. Which is exactly what I encountered.
The entire cleaning process took about half an hour. He managed to blow through the grilles, clean the dust from the fan, change thermal paste and remove the "traces" of the ginger cat that lives at my house. And then, most of the time we talked, discussing the presentation that took place the day before.
A selection of Mac temperature checkers:
1.Temperature Gauge
2 Magican Paster
3.SensorX
If the temperature at rest and minimum load rises above 40-45 degrees, the laptop must be urgently carried to the service - save.
Taking care of yourself should come from taking care of your gadgets. Replacing thermal paste, cleaning coolers and air outlet not only reduces the temperature of your knees, but also prolongs laptop life. Don't learn from my mistakes. Avoid them.
Where to carry
AT iCases.ru are ready to carry out the same procedure for your MacBook - for only 2490 rubles. If you say you came on a recommendation site, you will be made nice 10% discount! And without that it is inexpensive, but the benefits are tangible.
Comment iCases.ru
Dear readers, we want to thank you for showing such interest in our article! Judging by the reviews, every day we will have more and more customers! Why? Everything is simple!
None of you in the comments, dear "specialists", guessed right. The review used thermal paste brand Mx-2 from a Swiss manufacturer Arctic Cooling packaged in a 20 ml syringe. and net weight 65g. Thanks to this, an accurate dosage is ensured - 0.05 mlL / cm2 (the syringe is equipped with a scale, it is convenient to control). In the most discussed photo, no more than 0.15 g was deposited on the mirror surface of a chip with an area of 1.5 cm2 (1.5x1 cm). thermal paste - since this is an Intel Core i5 processor. With a viscosity of 85 Pa*s, this is approximately equal to ketchup: it gives a strong spreading over the mirror plane of the chip.
After the heat sink is lapped to the crystal and under the pressure action of the heat sink and radiator fastening mechanisms, the paste is squeezed out over the edge of the crystal (not prohibited, since this type of paste is a dielectric). The layer between them remains about 1/60 mm. The rim of the extruded paste serves additional heat conductor between the copper heat sink and the wiring part of the processor. The rim around the crystal also prevents the paste from drying out on the crystal (if anyone did not know, then it dries from the edge to the center).
So the more thermal paste the better, unless of course it is expired and thickened! We remove the old thermal paste with an alcoholized cotton swab, and a neat scraping with tweezers from the crystal was made for the sake of a review photo in order to show you the dried thermal paste from the factory. The laptop is only 4 years old! (This is Air 11” 2011 i5/4gb)
And for the future - guys, do not be lazy at first a little study the topic in depth;)
We look forward to welcoming you to our service centers! Judging by the experts who very clever in the comments we will have a lot of work. The services where they work should be ashamed that they have such employees!
To all our readers 10% discount! With love, Igor!
P.S.: More about the characteristics:
Rate.
Determining the cause of a malfunction is the very first thing you need to start repairing a MacBook. And the point here is not that “this is how it should be”, but that replacing components in Apple laptops is a very costly process, so you should be sure that it is really necessary.
Service cost:
The problems that a MacBook user may encounter can be divided into two groups:
Software
They are associated with incorrect installation and operation of the Mac OS X operating system or software. In this case, problems occur directly during or after working with any application, or may appear with a certain frequency.
They are caused by a malfunction in the operation of laptop modules such as the MacBook motherboard, hard drive, matrix, etc., and in this case, repair or replacement of MacBook components will be required.
MacBook Self-Diagnostic Steps: What You Can Do Before Contacting a Service Center
- If you have ruled out a software failure, the cause of the problem may lie in the connected, but not working correctly equipment. Turn off the device and try disconnecting all external equipment, leaving only the mouse. If the laptop started working normally, then further diagnostics of the MacBook will consist in alternately connecting the equipment and turning on the laptop. This way you can determine what exactly caused the problem.
- If this does not help, and the laptop continues to work in an incorrect mode, it is worth checking the hard drive, as well as eliminating problems with access rights. There are two programs for diagnosing a disk in a MacBook - Disk Utility and the fsck command (the latter is used for Macbooks with OS X 10.4 or earlier). The check must be carried out in safe mode.
- MacBooks with OS X 10.7 and later can be diagnosed using the Hardware Functional Test, or for devices released in July 2013 or later, Apple Diagnostics. It is very important to turn off all external equipment, as well as connect the laptop to the network.
- To enter the MacBook diagnostic mode, you need to hold down the D button after turning on the laptop. A gray screen will appear and you will be able to run the hardware check utility (you can choose a full scan or a partial scan). If the diagnosis is successful and the cause of the failure is identified, a message will be displayed with a record of the corresponding error.
Full diagnostics of MacBook - only in the service center
The ability to independently diagnose a MacBook is, of course, wonderful, but you can get a complete picture of the performance of a laptop only by contacting a service center. For example, if the computer does not turn on or preventive maintenance has not been carried out, the cooling system has failed, the battery or charger has been damaged, it will be possible to determine the cause of the malfunction only after disassembling the laptop and ringing the circuit. Similar diagnostics will be required for the MacBook even if it has fallen or been flooded with liquid.
Disassembling an Apple laptop is not easy even for a specialist, so you should not try to open the case yourself and get the components. Contact the service center - and the MacBook will be diagnosed thoroughly, and the wizard will be able to determine the exact cause of the equipment malfunction.
Specify the exact price for repairs with the manager by phone.
How much does it cost to replace a battery ~ Anna ~ 05-25-2018
Good afternoon!
When I connected to the outlet, my computer died (there was a spark and the adapter also died) ... I think either the computer died completely or the battery (I hope for the second of course)). Tell me how much the diagnostics will cost, how much the possible repair and terms
Macsave Center response: Good afternoon, Our laptop diagnostics is free, as a rule, repair of the laptop power circuit is from 3500-6500r
Reset NVRAM on Mac air now won't turn on~ Dima ~ 03-22-2017
Reset NVRAM on Mac air now does not turn on when I press the poppy safe the sensor turns green and goes out
Macsave Center response: Dmitry, good afternoon!
There may be a problem with the board. The device needs to be diagnosed. Bring it in, let's see. Diagnostics is free.
Poppy hangs ~ Enakenty ~ 09-03-2017
Good afternoon! I have a poppy book air a1466 2012 The problem is the following: when working with a poppy in normal mode, the touchpad works poorly and often does not respond to commands, the second is when you leave any programs on and close the lid or when the battery runs out and it turns off, then after opening or network connection, the mouse cursor starts to float and does not respond to tasks until you forcibly close all programs open before. What could be the problem? Thanks in advance! I also tried to start system diagnostics by pressing the d button when turned on, switched to testing mode after demanding an Internet connection, but it would not connect to the Internet and could not because it does not see my Wi-Fi router but sees all the others nearby, although in normal mode it works through a router without problems. Thanks in advance
Macsave Center response: Innocent, good afternoon!
USB does not work ~ Sergey ~ 13-02-2017
Good evening! USB does not work on the MacBook Pro 2011. If you connect the phone, then it charges it, but does not see it, if you connect a USB flash drive, it does not see it either. I tried the hard drive: the indication lights up, but does not find it in the system. What could it be? Thanks in advance for your reply.
Macsave Center response: Sergey, good afternoon!
It is difficult to say exactly what the cause of the difficulties is remotely. The device needs to be diagnosed. Bring it in, let's see. Diagnostics is free.
Problem with sound through headphones ~ Vyacheslav ~ 01-31-2017
If you insert the headphones while the music is playing on the iMac, then the sound continues to go through the speakers, in order for the iMac to see the headphones, for this you need to enter standby mode, and then exit it every time so that you can hear the sound through the headphones. software problem, how do you understand?
Macsave Center response: Vyacheslav, good afternoon!
It is difficult to say exactly what the cause of the difficulties is remotely. The device needs to be diagnosed. Bring it in, let's see. Diagnostics is free.
MacBook Pro (13-inch, Late 2011)Intel 6 Series Chipset going to restart without permission~ Arman ~ 05-01-2017
hello, I have a MacBook Pro (13-inch, Late 2011) Intel 6 Series Chipset:
Manufacturer: Intel
Product: 6 Series Chipset
Link speed: 6Gbps
Installed connection speed: 3 Gbps
Physical connection: SATA
Description: AHCI Version 1.30 Supported
Initially, there was a Toshiba MK5065GSX 500 GB HDD, over time it filled up, I decided to change it to seagate st2000lx001 2tb, after the replacement it periodically goes to restart about once a day or every two days, it also sometimes turns off emitting 3 short beeps, made diagnostics by holding D, errors did not reveal, tried to put back Toshiba MK5065GSX 500 GB everything works without failures. I read it on the Internet, some write that the temperature needs to be changed, tell me what actually can be, maybe a defective seagate st2000lx001 2tb? Thank you.
Macsave Center response: Good afternoon!
It's hard to tell exactly what the difficulty is. Bring it in, let's see. Diagnostics is free.
Overheating ~ Maxim ~ 04-01-2017
Good afternoon. Recently bought a used 2012 macbook pro 15, not retina. I replaced the thermal paste and cleaned it of dust, as the computer was warming up, but I did not conduct any tests with it: it warmed up even while surfing the Internet. After cleaning this problem disappeared. But recently I decided to run a performance test. And during the CPU test, the temperature jumped to 100 degrees in a few seconds. The coolers were just starting to spin, but I didn't wait and turned them on at full speed through the Macs fan control. Looking deeper, I saw that the maximum temperature of the PECI GPU and PECI CPU. What could be the problem?
Macsave Center response: Maxim, good afternoon!
The device needs to be diagnosed. Bring it in, let's see. Diagnostics is free. It's hard to tell exactly what could be the cause.
MacAir 13 2011 crashes periodically when pressing Delete ~ IVAN ~ 05-12-2016
Good afternoon! I'm worried about the Mac's intermittent crashes when pressing Delete.
Macsave Center response: Ivan, good evening!
The device needs to be diagnosed. Bring it in, let's see. Diagnostics is free.
hang ~ Olga ~ 26-11-2016
Good morning, I have a Mac pro Retina,(15-inch, Early 2013, Processor 2.4 GHz Intel Core i7, Software OS X 10.8.5, Memory 8 GB 1600 MHz DDR3) started to write little hard disk space. I bought an external drive to transfer photos. I leave it for the night, in the morning I see the econka is written, the recording is stopped, i.e. a part was recorded, but a part was not recorded ---- 1) you need to rewrite all the photos from Ifhoto to the hard disk.
2) From the image folder, overwrite everything as well
3) All folders from the desktop.
While I myself was trying to do this, all the photos from the folder, their images ended up in the trash, then I copied all the photos and tried to transfer them to an external drive, but they settled on the desktop and the Finder hung (I tried to complete this process in various ways, but it didn’t work out) Finder and desktop 1500 pcs photos plus folders. I need help. How much is it?
Macsave Center response: Olga, good afternoon!
The cost of cloning a system with data is 2500 rubles. Bring it on, let's see what's going on.
problem with macpro 2010 ~ Olga ~ 10-26-2016
Hello! The problem is this - the screen periodically goes blank during operation, but you can hear how the processor is working. goes out unexpectedly, and may not burn for several minutes and then work again. The monitor itself is in order - connected to the laptop - everything worked fine.
Macsave Center response: Olga, good afternoon!
The device needs to be diagnosed. It is difficult to say exactly what is the cause of these difficulties remotely.
The Mac slows down, but as soon as you connect it to the power, everything is ok / MacBook Pro 13 2011 ~ Alexey ~ 10-21-2016
It started unexpectedly, the computer was not exposed to any external damage! It slows down wildly, up to the intermittent movement of the cursor on the screen, but the raisin is that as you connect the poppy to the power supply, it comes to life before our eyes and everything works adequately! But it is worth noting that all the same, the overall speed of work is not the same as before! Suspicions on the video card, but how does it depend on Power Consumption?
What is the reason and how much did I get?
Macsave Center response: Alexey, good afternoon!
It is necessary to carry out diagnostics, look at the device. It may be enough to clean the cooling system. Bring it in, let's see.
Full charge cycle 20 hours ~ Alexander ~ 16-09-2016
I have a MacBook Air 13. I got it by inheritance. The battery has only about 300 charge cycles. At the moment, the full charge cycle is about 20 hours. Tell me what it is connected with and what to do?
Macsave Center response: Alexander, good afternoon!
It is necessary to carry out diagnostics of the power circuit, it is possible to replace the battery.
Slows down macbook ~ Vladimir Pavlenko ~ 01-09-2016
Hello! I have such a problem, I went to an event that took place in nature! there was no stationary electricity, the organizers had a 6.5 kW benzo-electric generator, I had to charge my macbook from it! the next morning I put the MacBook on charge and found that the charging indicator lights up for a second when connected and that's it, charging is not going on, the screen showed that the battery needs service. In the net I found that if I press a combination of keys, I don’t remember which battery should work! helped! Charging is on now! indicators are lit as before! BUT TERRIBLY BEGAN TO BE STUPID. Tell me what could be the problem! poppy beech model MD 101 2012! even while I am writing to you, he keeps looking down!
Macsave Center response: Vladimir, good afternoon!
In this case, it is necessary to change the battery! Specify the model of the device.
After closing the lid, the macbook a1342 does not turn on and does not start ~ Andrey ~ 08-25-2016
Good day. Worked on a poppy - photographed photo booth - closed the lid, drank tea - opened - and nothing happens - does not start from sleep mode, connected the magsafe - first it burned green then red - the white diode does not respond. I didn’t subject it to mechanical stress, I didn’t spill liquid - nothing - I died on an equal place,
Macsave Center response: Andrew, good evening!
In this case, it is necessary to carry out diagnostics to identify the causes of these difficulties (motherboard power circuit / northbridge). Bring it in, let's see. Diagnostics is free.
Macbook pro won't start 17~ March ~ 13-08-2016
Hello.
The computer was left in sleep mode overnight. Didn't start in the morning. Coolers won't start. But there is a loading wheel and a slider. At 100% load, the computer simply turns off. What could be the problem?
Macsave Center response: Good afternoon. There may be a problem with the video card or hard drive. You need to do a diagnostic, it's free
Problems exiting hibernation mode in Win7 Boot Camp ~ Vitaliy ~ 06-17-2016
Hello, I own a MacBook Pro 15 Late 2013, most recently the hard drive was replaced in a service center, upon its return, the laptop stopped exiting hibernation mode, it just hangs with a black screen, I tried everything I found on the Internet on this topic, rolled back the drivers, turned off various chips in power supply modes did not help. I demolished the system, deciding that the problem might be in it, after reinstalling the problem remained on clean Windows, of course, with the installed drivers, exactly the same thing happens, the note hangs when exiting hibernation mode, please tell me what to do and can you help?
Macsave Center response: Hello, you need to look / diagnose, come to us for a free diagnosis
Question about keyboard operation on MacBook Pro 2011 ~ Pavel ~ 06/15/2016
Good day!
I have a MacBook Pro 2011 Unibody. I periodically clean it and change the thermal paste. During the last replacement of thermal paste (parsing, removing the motherboard), I inadvertently damaged (torn off) the touchpad cable. Having decided that I would use the mouse before replacing it, I collected it, which, in general, I do not for the first time and found that the keyboard does not work either. After that, I disassembled and checked the keyboard cable a couple more times, but there was no result. The keyboard is silent. ((Tell me what could be the problem? Can a non-working touchpad for example be somehow connected with the keyboard? Or maybe another option? And how much does the touchpad cable, keyboard and cost of work cost?
Thank you!
Macsave Center response: Good afternoon, you need to diagnose, maybe it's the touchpad trailing cable or the connector and the keyboard cable is also damaged, you need to look, the cost of replacing the cable is 4500r, since it comes with the touchpad. Our diagnostics are free.
shuts down macbook air 11 A1465 ~ Vladimir ~ 09-06-2016
Hello, it turns off after connecting external drives via USB and Thunderbolt, there is no shutdown system: it can work for three minutes and five seconds, the flash drive in the USB connector does not turn off the computer, if the computer turns off involuntarily, you can turn it back on only by disconnecting the power supply, that is, from battery
Macsave Center response: Good afternoon, you need to diagnose, perhaps the matter is in the power circuit on the motherboard and with a strong power consumption to external devices, the MacBook turns off and blocks the BIOS. Diagnostics is free.
Cooler Macbook air 2015 ~ Pavel ~ 08-06-2016
Hello!
Macbook Air, half a year of very gentle use, suddenly began to spin the cooler up to 6500 rpm. At the same time, the temperature of the processor and so on is 28-31 degrees
Reboot, reset sms - no result. Works smartly and stably, only the cooler threshes
What could it be and what to prepare for?
Thank you!
Macsave Center response: Good afternoon, maybe the problem is in the cooling system, if not, bring it in for diagnostics
Problem with discrete monitor~ Daniel ~ 05/31/2016
Hello, I have an MBP 13" late 2011, when a second monitor is connected via the Mini DP to VGA adapter, the image appears on it for a second and disappears. If you leave it like that for a minute, the poppy starts to slow down and artifacts appear. ~1360x780, everything works fine, and the monitor works (although sometimes it flickers, about once every 30 minutes).The problem is most likely not in the software (I checked both on OSX and on Windows via Boot Camp, reinstalled the OS) and not with the adapter (I checked on MB 13" 2010, everything works fine in 1920x1080). What could be the problem? The card reader also does not work (the system sees it, but does not read the cards), so the problem is not in the video card, but in the motherboard?
Macsave Center response: Good afternoon, apparently the point is in the bridge they have both video and power management
MacBook Pro 17 A1212 coolers do not turn off ~ Igor ~ 05/27/2016
Good afternoon! I got a MacBook Pro 17 A1212, when turned on, the coolers turn on almost immediately and no longer turn off, even when you reboot. The cooling system has been cleaned. Maybe the OS or is it necessary for you to diagnose? How it worked before - I don’t know, it wasn’t for me. Thank you!
Macsave Center response: They all behave like this over time, it's practically the norm.
card reader~ Alexey ~ 08-05-2016
hello, the card reader does not work in a 15" firmware in 2011. it is in the list of devices, but it does not read cards. is it possible to fix it and how much will it cost?
Macsave Center response: It is necessary to diagnose the TC, it is soldered on the motherboard
macbook~ ella ~ 05-05-2016
Hello, I have such a problem. The Macbook started to fail, I restored it from the previous version, but the spacebar now prints =, and the shift turns up the volume. I completely reset the settings and set the factory ones, but the problem was not solved. What to do?
Macsave Center response: Good afternoon. there is a keyboard cable or the keyboard itself fails, but at the beginning, reinstall the system from scratch and without transferring data
Built-in keyboard not working on MacBook Pro (Retina, 13-inch, Early 2015) ~ Vysily ~ 03-04-2016
Good afternoon! Do not tell me what is the reason? It works, then the keyboard will work on the MacBook Pro (Retina, 13-inch, Early 2015). Everything is fine with the computer, everything works properly, it has never been wet with water and has not fallen. When I hold the poppy from the bottom and lightly press down on the bottom of the lid, the keyboard works, then I stop pressing, it stops working and tries to find the keyboard and touchpad (mouse) using Bluetooth. What could be the problem? and how long can it be fixed?
Macsave Center response: Good afternoon, perhaps there is no contact in the keyboard cable or it's in the track pad, since the keyboard is powered through it, you need to diagnose
Poppy 725RS / A does not load ~ Andrey ~ 03-19-2016
Hello!! I have a situation like this, I will describe it step by step. The Mac was turned on and in the operating mode in the opera two horizontal lines passed across the screen and the laptop hung, I rebooted it with the button and after that it didn’t boot up, that is, it turns on, the sound turns on after the apple appears and in a circle it loads on a gray screen, after which the wheel The download disappears and the gray screen remains. I tried to boot in safe mode while holding Shift, the loading scale reaches half and disappears and a gray screen remains. Clamped Option chose the OS installation disk, the boot wheel goes on like when you turn on the poppy and disappears, but the screen becomes illuminated black. Can you tell me what it could be??
Macsave Center response: Good afternoon, apparently the video chip is out of order, a common breakdown, the replacement cost is 10,000 rubles, but first we diagnose
macbook pro 15~ Max ~ 11-03-2016
Good day! For several weeks now I have been struggling with one problem, the computer turns off spontaneously. Previously, the picture froze and the poppy turned off, but now the screen is sharply black and turns off. (May work for several hours or a couple of minutes) Diagnosed hardware equipment gave error PPT004. But also installed on the computer in parallel with Mac os x, Windows. Which, to my surprise, works stably and does not turn off. So the problem is in the Mac software. Here's what I did: I completely reinstalled the software, did a SMC reset, and read the logs, (system, diagnostics, etc.) did not find anything suspicious. How to be?
Macsave Center response: Good afternoon, you need to diagnose, maybe the problem is in the video card, although it should also appear on Windows
Subject ~ Exiled ~ 21-02-2016
Hey! I have a 2008 MB134. My old man honestly plows all these years, but he often freezes, works from the mains, the battery died more than a year ago, along with the adapter. I bought an adapter that is not original, the poppy became very noisy, the keyboard backlight disappeared !!! I would like to know from you how much it will cost me to replace the hard drive with an SSD, and the repair of the keyboard does not work, the delete and enter buttons do not work !!! Thank you!!!
Macsave Center response: Hello, replacing a button is 300 rubles, ssd - it all depends on the volume, you can see prices in stores, installing 1500 instead of hdd and 2500 instead of cdrom.
Mac Book problem ~ Roman ~ 12-02-2016
HELLO! MY COMP. BOOTS AND DISCONNECTS IMMEDIATELY. Reasons? What should I do? Thank you
Macsave Center response: Hello, there can be a lot of options, most likely the problem is on the motherboard - a bridge or a power circuit. We can offer a free diagnostic.
Poppy beech pro freezes 15.2011~ Oleg ~ 12/27/2015
Hello! When working with a poppy book, there are problems when opening photos and some videos on the Internet, and on the same site something opens and something doesn’t. The laptop freezes and starts to warm up, then just a blue background of magnetic exploration and that’s all. reboot everything seems to be ok
Macsave Center response: Good evening, possibly Hard disk, software, cooling system. You need to diagnose, you can drive up in front of you and see everything.
Problems with MacBook Pro ~ Nikita ~ 12-21-2015
Good afternoon. Unpleasant and unexpected things happen to my poppy. The Mac is just over a year old, has never let me down and worked perfectly. The following has been happening to him for the last three days:
My Mac has over 20GB of free space, but in recent days, when I turn on my Mac and the memory melts in a matter of minutes, it gives a message that the boot disk is full, it asks me to close all programs (and closes them myself) and the memory shows 0kb. That is, the work of the poppy can take no more than 10 minutes. After that, I have to recharge it (with which, unexpectedly, I also had problems and it does not react every time). After the reboot again, there are about 27 free GB, and each time to check it, I delete a lot of things from the poppy to clean it up.
In this situation, before going to bed, I turned off the poppy, in the morning I found that it did not turn off and at the same time the battery charge was at zero. The monitor, as far as I remember, went out.
I'm used to the fact that after leaving for 15 minutes, the poppy goes to sleep. Having gathered in the morning on business and returned in the evening, I found that the poppy's monitor was turned on like a few hours ago. He didn't go to sleep.
With what all this can be connected?? All this has been happening since December 18 (4th day), before that it worked properly.
Macsave Center response: Good afternoon, you need to diagnose, probably a malfunction in the power circuits
Problem with Eran and lag~ denis ~ 11-12-2015
Hello, in general, the problem with mac air 11 is that one day I turned on the computer and stripes appeared on the top of the screen, as if a distorting image and disappeared in minutes .. then it just happened that the image itself became as if it had been divided into layers, everything was grainy, and again disappears. on this adventure only continued, a lag appeared - the poppy just started to blunt after some usual operation (for example, closing the program) thinks, and then just reboots, are these problems related? how to be?
Macsave Center response: Good afternoon, you need to bring it for diagnostics, the situation is diverse and completely incomprehensible. Diagnostics is free.
Macbook pro mid 2014 randomly turns off ~ Albert ~ 03-12-2015
Hello. Macbook pro randomly shuts down. Completely random. Carried out diagnostics by means of the laptop itself, writes that battery service is required. I decided to check that the problem is really in it. He pulled out the battery plug, and began to work purely from the 220 volt network. The laptop started to work slower, but it stopped randomly turning off. Does this mean that the problem is really in the battery?
Macsave Center response: Good evening, probably the problem is in the battery, it can also slow down due to a damaged battery, the replacement cost is 8000-9500 depending on the model
MacBook does not turn on ~ Sergey ~ 19-11-2015
Good afternoon. Disease history. MacBook Pro after sleep mode the next morning did not wake up. A couple of times it started with a set of keys "reset NVRAM". Once again, he did not turn on at all with these actions. The battery is charging. Now fully charged. Can you suggest an algorithm of actions? Thank you
Macsave Center response: Good afternoon, you need to diagnose, often such symptoms are associated with a breakdown of the video card, diagnostics are free for 1-2 days
Macbook pro mid 2012 md 101 does NOT turn on ~ Andrey ~ 11-17-2015
Good evening! Tell me about this problem - after losing the beep and the appearance of the apple, the poppy turns off, but at the same time it goes normally to check for errors, (Apple Diagnostics)! SMC - reset, there is no sense, there is a suspicion that the SMC chip has flown! How much will a replacement cost?
PS: Mac was flooded, but at the same time worked for half a year without problems!
All possible, existing commands on the poppy tried zero sense!
Macsave Center response: Good afternoon, this chip very rarely fails, in your case I can’t say right away what the reason is, you need to diagnose it.
MacBook slows down~ Anna ~ 10/21/2015
Good afternoon! The battery on the macbook pro (2011) flew off, it works exclusively from the outlet, but at the same time it slows down terribly. Could these two problems be somehow related? The standard disk diagnostic utility did not reveal any problems.
Macsave Center response: Yes, there is probably a problem with the battery, it needs to be changed, the cost is 5500-6000 rubles, depending on the battery model
Subject ~ Abu ~ 30-09-2015
macbook air 13, when I turn on the poppy, it immediately makes noise, freezes a lot, and heats up. 6500 rpm, what can be done, and how much does the repair cost?
Macsave Center response: Good afternoon, the cost of diagnostics is free, repair after diagnostics, the problem may be in the chips and the power circuit
Macbook pro turns off ~ Daniel ~ 09/20/2015
hello. macbook pro 15 (mid 2010) turns off after 5-6 hours of work from the network. seems to be overheating. after I disconnect the adapter and the machine cools down slightly, it works more or less stably. Is it possible to fix/repair this?
Macsave Center response: Good afternoon, the cost of cleaning is 2500r, it does not include cooler lubrication and new thermal paste, if this is a problem, then everything will help
Apple technology repair ~ Eugene ~ 09/14/2015
Hello, something burned out on my macpad and it does not work after an overvoltage of electricity, what kind of breakdown is approximately and how much will the repair cost at most?
Macsave Center response: Good afternoon, the cost and time can be determined only after the diagnosis, it is free and lasts from an hour to 2 days, depending on the breakdown situation
macbook air touchpad stopped working ~ ergek ~ 12-09-2015
hello, in the winter I spilled some water on the keyboard and the touchpad was handed over to the service. I got it fixed and everything worked fine, but after a while the touchpad began to blunt, but I didn’t pay much attention to it. the other day I accidentally pressed the touchpad (not hard) and it stopped working altogether and the keyboard stopped. It only works when you press hard enough on the touch.
Macsave Center response: Good afternoon, you need to carry out diagnostics, the entire malfunction is visible in the touchpad and it needs to be changed, the replacement cost is from. 3000-4500₽ depending on the model of macbook.
Diagnostics ~ Maxim ~ 09-09-2015
Good afternoon! How long does it take to diagnose a macbook pro?
Macsave Center response: Good afternoon, the average time is from 10 minutes to 3 days
Macbook Pro won't load ~ Natalia ~ 08/16/2015
Hello, macbook pro won't boot. After unsafely removing the flash drive, the macbook stopped starting. I turn it on, a white screen is loading, an apple, a loading bar from the bottom, it reaches 1/3 and turns off, there is also Windows 7, it also stopped starting, when Windows 7 is loaded, a "blue screen" appears on the Macbook. Help, how to save information on a computer and what to do?
Macsave Center response: Good afternoon, you need to diagnose, probably a problem in the software
breakdown of macbook A1181 ~ Yuri ~ 06-08-2015
Macsave Center response: Good afternoon, apparently your system has crashed, it needs to either be restored or reinstalled
macbook ~ igor ~ 09-07-2015
I have a macbook, I installed Windows 7 on it, I lost it, I want to restore the poppy, I can’t
Macsave Center response: Good afternoon, installing windows 7 comes from your license disk and costs 1500r
Reset password at the entrance to mac oc ~ Sergey ~ 06-15-2015
Good afternoon! It does not accept a password at the entrance to the OS - the window trembles and resets the password, I tried to enter the wrong one, but the same thing happens, and it does not even write "wrong password". The reset, sleep and exit buttons do not work. Turned it off with the power button - did not help. Everything happened unexpectedly - left it open, he fell asleep and when I began to enter the password such a story happened. What could it be?
Macsave Center response: Good afternoon. Only save everything via an external device and reinstall the OS
Does not hold charge without being connected to the power supply (MacBook Air) ~ Vitaliy ~ 05-25-2015
Good afternoon. MacBook Air stopped charging after taking a dip in tea :). What is the reason? What to do? How much is it?
Macsave Center response: Good afternoon, you need to do diagnostics, the problem may be in the power circuits on the motherboard
MacBook Pro retina 15 does not turn on ~ Ivan ~ 05-19-2015
Good afternoon! Macbook retina 15 2012 won't turn on Most likely something happened due to overvoltage. A heater was turned on in a nearby outlet when he turned on the beech in the network. After that, the beech stopped turning on, and where the heater was turned on, the mains filter burned out. The charge is whole, I checked it on another poppy. When you insert the charge into the poppy, the light on the charge does not glow, but if you insert it into another working poppy and then into my non-working one, it lights up in orange! I would have given it to your center for diagnostics and treatment for a long time, but I am very far away, and there is no apple service in our city. What would you advise?
Macsave Center response: Good afternoon, you clearly have a problem in the power circuits of the motherboard pin
MacBook Pro 15 (Late 2008)~ Dmitry ~ 16-05-2015
Hello, the insulation near the L-connector peeled off, I decided to solder it - I crushed the LED and broke off a piece of the board when I tried to remove it. Mac from the network worked, but stopped charging the battery. I ordered a new cord with an L-connector, while waiting for the cord, the battery was discharged to 1-2%. Managed to turn off the Mac in normal mode.
Soldered a new cord, connected, the Mac does not start. Installed the battery - it started. But! The indicator on the L-connector is NOT ON! (neither green nor orange) I sinned on a Chinese fake, I thought there was no LED at all. Mac works from the network, sees the battery BUT does not charge. With the Mac running, I pulled out the battery, worked for some time from the mains, then hooked it and pulled out the plug. Mac passed out and then stopped starting with or without a battery. I read that resetting the SMC can fix the startup issue. But when resetting, the Mac does not react in any way, the indicators are silent, it still does not start.
Since the battery was puffed up, and then there was a full discharge - I ordered a new A1281. PRAM/NVRAM reset after forced start* (no battery). Also no change.
*(Turn off MagSafe, hold Power for 5 seconds without releasing, connect MagSafe, hold Power for another 5 seconds, release, wait a couple of seconds, start the Mac). The Mac forced to start, but with all the problems that arise when you need to reset the SMC (Indicators-Fans-Lighting-Power).
A new battery arrived: Mac forced it to start *, but writes: No battery Power source: battery. (B-rr-rrrr)
I took a Mac (without batteries), charging and went to a neighboring city, found an Apple point. The seller turned out to be Air with 60w, connected it to Magsafe in mine - the indicator turned green, but after 10 seconds it dimmed and soon went out completely (what the hell - I think everything! Burned his MagSafe to the guy), plugged it back into my Air - it works. My Mac did not start due to lack of power. They took my 85w with a soldered new cord - L-conn. Inserted into Air - lit up green !!! Hooray! The cord still works. I put it in my back and no reaction.
Results: I replaced the cord with an L-connector, bought a new battery.
The Mac starts only forcibly, SMC is not reset. The LED on the plug does not light up. On the battery charge indicator, the 6th indicator constantly shines, which is from the network - which is from the battery. I checked that power is supplied to the MagSafe board and from it to the Motherboard in full. All contacts are called. Maybe there is some kind of diagnostic that can still be done at home in addition to (D-at startup), everything is clean there.
Macsave Center response: Good afternoon, everything clearly points to the power circuits of the motherboard. Only diagnostics in the SC will help
Slows down poppy ~ Alexander ~ 04/30/2015
Hello, suddenly the macbook pro 13 began to slow down in the middle of 12. Everything worked fine, closed the lid, opened it in ten minutes and that's it: the response of 5-10 seconds to the action. I thought that the hard drive could fly (rearranged it to the same poppy - everything is fine there). Tried to reinstall the system still slows down.
Macsave Center response: Good afternoon, I need to do a diagnosis, the problem is unclear
MacBook Pro A-1278 Hangs ~ Rustam ~ 03-04-2015
good afternoon
the macbook freezes very much, it’s just impossible to work, it works as it should in Safe mode, the OS was reinstalled, the radiator was cleaned there and there was no dust, the hard drive was changed, the frame was also changed, but nothing helps.
Macsave Center response: Good afternoon, you need to diagnose, problems can be in the north bridge and in many other places
sound and headphone output do not work ~ ilya ~ 02/26/2015
suddenly the sound and the headphone output stopped working, the sound sometimes disappeared and was distorted, but then everything stopped working at one fine moment, this is due to the system or technical problems, the macbook did not drop ...
Macsave Center response: Good afternoon, you need to diagnose, maybe the problem is in the connector, but maybe in the codec
MacBook Pro A1278 does not turn on ~ Dmitry ~ 11-29-2014
Hello, please tell me what could be the problem:
The Mac has stopped starting, namely, when you press the on button, the fan starts up and after a while emits a single signal with a constant intensity every 3 seconds.
I changed the RAM, threw off the hard one, the percentage is heated within the normal range without a radiator, I checked it, the video card is similar.
I don't understand what the signal means.
Macsave Center response: Good afternoon, you need to diagnose, the north bridge often flies on your models.
The macbook computer began to work very slowly ~ Maria ~ 09-29-2014
The computer began to work very slowly.
Regularly I check the rights and a disk. Please tell me what it could be? I really hope that the problem is not with iron.
Disk Utility gives
Error: This disk must be restored using Recovery HD. Restart your computer by holding the Command and R buttons until the Apple icon appears. When the OS X Utilities window is displayed, select Disk Utility. The Macintosh HD volume is corrupted and needs to be repaired.
Many thanks!
Macsave Center response: Good afternoon, you need to save the data and reinstall the operating system of your Macbook. It could be that the hard drive is failing.
MacBook does not turn on ~ Maria ~ 09/20/2014
Macbook pro does not turn on, but the fan works (noises), the power supply is new, the battery too. What is the reason?
Macsave Center response: Good evening, there can be a lot of reasons for the lack of a signal on the Macbook display, you need to do diagnostics, diagnostics in our center are free.
What to do with a macbook if it refuses~ Eugene ~ 09/20/2014
Hello! macbook a1181 OS x 10.4.11 Skype stopped working, not connecting to the server, an attempt to install a new version of the program was unsuccessful. The Skype site says that our operating system is no longer supported by Skype. What do you recommend ...
Macsave Center response: Good evening, you need to update OSX, your mac supports newer systems.
Macbook pro retina 2013 random shutdown ~ Lucy ~ 01-09-2014
Hello. My macbook pro 13 retina turns off as soon as I remove my finger from the touch track. A sign appears with a suggestion to turn off, hibernate, cancel and restart. I click on cancel, put my finger on the touch track and then everything works. The power button to turn it on does not work, you need to close the lid and open it again - the poppy turns on by itself. I didn’t drop it, I didn’t flood it, I use it carefully, the poppy is only 2 months old. What could it be..
Macsave Center response: Good afternoon, the problem can be both in the operating system and in the hardware. The touchpad on the retina is a problematic pesto. Drive up, we'll do the diagnostics, we'll check in front of you.
Macbook pro a1286 won't turn on~ Grigore ~ 07/19/2014
Good afternoon, I have a macbook ma348ll / a or 1175 15", the problem is that it does not start with RAM, and when I remove the RAM it starts but the screen does not turn on. Could it be a video card?
Macsave Center response: Good afternoon, in your case it may well be that the video chip is out of order, this is a very common failure of A1286 MacBooks. But, first we do diagnostics, because anything could break.
Good day! Please tell me, is it possible to "permanently" solve the problem of high CPU usage (250-300) and op (above 1gb) by the kernel_task process, or is it time for a service ?! The cause of the appearance could not be determined. Reinstalling OS X on a formatted hd did not bring the desired result, temporarily solved the problem by deleting Plist "and with the identifier MacBookPro8_1, but after installing the next update, there was again a strong delay in system response. Parameters: 2.3 GHz Intel Core i5, 8 GB 1600 MHz DDR3, Intel HD Graphics 3000 512 mb, Serial number C17F9GXMDH2G, OS X 10.9.3 (13D65) Thanks in advance for your reply!
Macsave Center response: Good afternoon, the situation is strange, you need to diagnose hardware, there are a number of reasons why such a problem may occur on a MacBook.
What about him? ~ Evgeny Voevodin ~ 07-04-2014
Hello!
I have a macbook air 13" mid 2012. OSX 10/9/2 The problem is the following: it works fine, does not get hot, does not bug, incl. under load, only if loaded. And it is loaded within a couple of hours - easily, maybe longer. First, a white screen for 20-40 minutes, then the user's choice, the same amount, it slows down unrealistically, asterisks when entering a password are displayed with a delay of at least 5 seconds. But after that, when you exit sleep mode - no problems.
The problem is that I am in Sevastopol, local craftsmen can’t advise anything other than replacing the motherboard, and they can’t do it either ... I’m thinking about buying a new one, or are these some typical problems for a specific problem with a certain final cost. Thank you!
Macsave Center response: Good afternoon, often there are problems in SSD hard drives and cables on the MacBook motherboard, the south bridge could also fail. A complete diagnosis is required.
Installing the operating system macbook a1181 ~ Stanislav ~ 17-03-2014
Good afternoon, I had the following problem, I will try to describe step by step.
I have a macbook 1181, so to speak, I inherited it, the previous owner did not spare him much.
At some point, the operating system stopped loading. After starting the laptop, an apple icon appeared and a rotating circle under it, then nothing happened, I tried to leave it for the night, the same thing in the morning.
According to the previous owner, this has already happened to him, the operating system also crashed, it was solved by reinstalling it. Latest OS 10.7.4
When you try to reinstall the OS on the same 10.7.4, the system hangs in the process of preparing for installation. Waited several hours, no result.
I replaced the hard drive in the laptop, formatted it according to the instructions, tried to install OS 10.6.3, the same situation, it will write down in the last minutes of loading. At some point, it loaded the post, after which the screen went blank. I forcibly rebooted it, and left it to boot from the hard drive, it turned around (30 minutes) and the melody played, but the screen remained gray.
The last time I tried to reinstall the OS, the process was hanging for about 30 minutes before completion (while the screen worked, but did not respond to the touchpad).
I also tried to change the bootable flash drive, the result is the same.
Tell me please, what could be the matter?
Macsave Center response: Good afternoon, problems with the hard drive often appear this way, it’s already time to change the hard drive in your laptop, because in Mac A1181 during this time more than one hard drive has changed, as an option, the north bridge may be, but this is rare.
MacBook Pro display goes blank ~ Eugene ~ 11-01-2014
Hello,
after a large glass of dry white wine, the laptop came to life after a couple of days, however, when you start Final Cut, Photoshop, VLC, the display goes blank.
Adobe Illustrator works with vectors, the display also disables working with shadows.
When examining the motherboard, no traces of flooding, especially corrosion, were found.
2.4GHz Intel Core i7 processor, 384MB Intel HD 3000 graphics, OS X 10.8.5
What could it be?
Macsave Center response: Good afternoon, often such problems are associated with video memory and a video card, but in your case you need to do a detailed and long diagnostics, since it is most likely flooded under the chips.
Macbook small 11 screen does not work ~ Yana ~ 09-10-2013
Hello, I have Apple Air 11, the screen below says MD508. Help me make my baby, I turn it on with a button, but he does not give life signals, everything is silent and the screen does not light up, I understand that I need to do diagnostics?
Macsave Center response: Good afternoon, perhaps there is a problem in the Macbook power connector or a power problem on the motherboard, we will diagnose during the day and tell you what is the reason for your Aira.
The easiest way to avoid the help of service centers when looking for hardware problems (not all of them have a good reputation) is to use the built-in Mac diagnostics. In this article, we will tell you how to launch and use " " and " Apple Diagnostics».
In contact with
With the help of standard diagnostic tools, you can effectively detect hardware malfunctions (problems with a hard drive, solid state drive, RAM, graphics processor, motherboard and other nooks and crannies of hardware). How to do it?
On which Macs which utility
Regardless of (MacBook, iMac, Mac mini or Mac Pro) and year of release, the operating system includes a hardware self-diagnosis utility. In computers that were released before June 2013, it is called " Apple hardware functional test" (Apple Hardware Test - AHT), and after - " Apple Diagnostics».
Before running any of the utilities, be sure to turn off all peripheral devices (including optical drives, if any) except for the keyboard, mouse, display, and Ethernet adapter. Some versions of OS X Lion and later may require Ethernet or Wi-Fi to run the internet version of AHT. It is no different from the offline counterpart.
To use AHT, be sure to connect your MacBook to a power source.
List of keyboard shortcuts
If there is no mouse, then the following shortcuts will come in handy:
- Options (⌥) + D: start diagnostics with internet;
- Command (⌘) + G: start operation;
- Command (⌘) + L: display a list of languages;
- Command (⌘) + R: start the test again;
- S: off;
How to Run Diagnostics on Mac ("Apple Hardware Functional Test" or "Apple Diagnostics")
Note: " Apple hardware functional test" and " Apple Diagnostics' work in the same way. The only caveat is to run " Apple Diagnostics” requires an active Internet connection, and the interface will be much prettier.
1 . Turn on or restart your Mac if it is turned on.
2 . While powering on, press and hold the " D” until the language selection screen appears.
3 . Select the language (if a mouse is not connected to the computer, then select the language using the arrows, and enter using the "Enter" key).
4 . Mac diagnostics will start.
After the test is completed, the results will be displayed.
To exit the ANT utility, click the " Reload" or " Switch off» at the bottom of the window.
What do the results say?
If during the test, problems with the hardware are found, then get ready to contemplate the error and some explanatory details.
You can decipher AHT errors on the Apple technical forum, and in general I recommend that you go there first of all when looking for solutions to problems with apple gadgets. True, you will need knowledge of English at least with a dictionary.
Apple Diagnostics error codes and their decoding can be found below:
ADP000- Problems on the computer are not found;
CNW001, CNW003, CNW004, CNW005, CNW006- There are problems with the Wi-Fi module on the computer;
CNW007, CNW008- No Wi-Fi networks detected. There are no Wi-Fi networks available, or the Wi-Fi module is defective;
NDC001, NDC003, NDC004, NDC005, NDC006- Faulty camera;
NDD001- There is a problem with the USB module. Disconnect all external devices except the keyboard, mouse, and Ethernet adapter. Run the test again. If this code appears again, contact the service center;
NDK001, NDK003, NDK004- There is a problem with the keyboard;
NDL001- There is a problem with the Bluetooth module;
NDR001, NDR003, NDR004- There is a problem with the trackpad;
NDT001, NDT002, NDT003, NDT004, NDT005, NDT006- There may be a problem with the Thunderbolt module. Disconnect external Thunderbolt devices and run the test again. If this code appears for the second time, contact the service center;
NNN001- The serial number could not be found. The computer needs service, contact the service;
PFM001, PFM002, PFM003, PFM004, PFM005, PFM006, PFM007- There is a problem with the system management controller (SMC);
PFR001- There may be a problem with the computer's firmware;
PPF001, PPF003, PPF004- There may be a problem with the fan;
PPM001- There is probably a problem with the memory module;
PPM002, PPM003, PPM004, PPM005, PPM006, PPM007, PPM008, PPM009, PPM010, PPM011, PPM012, PPM013, PPM014, PPM015- There may be a problem with the built-in memory;
PPP001, PPP002, PPP003- There is probably a problem with the MagSafe power adapter. Try unplugging the power adapter from your Mac and from the wall outlet, then plug it back in. Run the test again. If this code appears for the second time, contact the service center;
PPP007- There may be a problem with the power adapter or it is not connected. To test the power adapter, reconnect it to your computer and a power outlet. Run the test again. If this code appears for the second time, contact the service center;
PPR001- There is probably a problem with the processor;
PPT001- Failed to detect the battery;
PPT002, PPT003- The battery will need to be replaced soon. It is serviceable, but its capacity has decreased.
PPT004, PPT006- The battery needs service. The battery is defective, although this may not affect its performance or capacity;
PPT005- The battery is installed incorrectly. Shut down and turn off your computer;
PPT007- The battery on your Mac needs to be replaced. The battery is good, but its capacity has decreased significantly. Until you replace the battery, you can continue to use it without harming your computer.
VDC001, VDC003, VDC004, VDC005, VDC006, VDC007- There is probably a problem with the SD card reader;
VDH002, VDH004- There is probably a problem with the storage device;
VDH005- Unable to start macOS recovery;
VFD001, VFD002, VFD003, VFD004, VFD005, VFD007- There is probably a problem with the display;
VFD006- There is probably a problem with the GPU;
VFF001- There is probably a problem with the audio hardware component.
In any case, if it was not possible to avoid repairs at the service center, we strongly recommend that you contact only certified specialists who specialize exclusively in Apple technology. It will cost a lot, but buying a new gadget is much more expensive. It’s better to forget about the basement workshops “at Uncle Vasya’s”. Repairing apple devices requires a very meticulous approach and advanced skills.
