Why there are no digital channels. Connecting and setting up a digital tuner

Seal

Most of the country's territory is already covered by digital terrestrial TV broadcasting, the broadcast is stable, but sometimes there are still blackouts. This article is not only about why digital television does not work, although everything was in order before, but about all cases of problems with it.

When you turn on the set-top box for the first time, it is suggested to search for digital channels, but the digital set-top box does not find channels. There were cases of changing the order of channels, this also leads to the need to reconfigure the set-top box or TV, but the most frequent cases are when the set-top box showed yesterday, and today it is not.

Reasons why they stopped listening to digital channels

termination of the broadcast;
weather;
equipment malfunction.

Stop broadcasting

When carrying out preventive maintenance on the website rtrs.ru in your region, you can find information about the time of their carrying out, while a setting table is usually displayed on the screen.

If the TV set-top box catches only 10 channels, although before that there was broadcasting and 2 packages, then you need to check the signal level on one of the channels. If it is 0, it is most likely disabled. This is usually due to the fact that it was broadcast in test mode. After the equipment has been tested and the information has been collected, the broadcast is turned off.

1 package, as already noted, is already broadcast over a larger territory of the country and it is mandatory, unlike 2. Difficulties with the introduction of 2 packages are associated with the broadcasting of analog television, since there are not enough free frequencies.

The termination of broadcasting of analogue television in 2018 will accelerate the activation of 2 multiplexes.

Of course, an abnormal broadcast disconnection due to a malfunction is also possible, but this is unlikely.

Weather

Anyone who has already dealt with satellite equipment knows that during heavy rain, and especially when snow sticks to the "plate", the image crumbles into squares or disappears altogether. This also applies to why digital TV shows poorly in bad weather. Why doesn't digital television show today?

This can be detected by checking (see above), in this case the signal will be greater than zero, but small for high-quality reproduction.

There is only one way to deal with this - this is to increase the signal as close as possible to 100%, then any bad weather will not care.

Equipment malfunction

If digital television does not work completely, then here you need to divide by, then what exactly is the problem for which something does not work. This could be:

malfunction of the console;
faulty cable and connections;
malfunction of the antenna.

The prefix does not work

It probably makes no sense to dwell in particular on this point, since the malfunction of the set-top box will be immediately visible in this case. When the set-top box is turned on, the LED indicating that it is turned on will not light up or it will light up dimly.

Many consoles have a separate 5 volt power supply. It is usually standard and suitable from many devices (for example, a router) and you can check the serviceability by a simple replacement.

Checking the output voltage with a multimeter may give nothing, since in the absence of a load, the measurement may show the required 5 volts.

The set-top box is constantly rebooting or just a splash screen is shown, but the commands from the remote control or the panel are not executed.

Faulty cable and connections

In this case, more than one channel does not work as the signal will be lost. Review carefully all connections and cable integrity. This is especially true for RG-6 (white) for interior work, which we sell everywhere. Its service life on the street is short, it cracks, water gets into the cable and the braid collapses.

Antenna malfunction

Indoor antennas rarely break, but outdoor antennas often break. Rarely from moisture, but from thunderstorms quite often. No matter how much you reconfigure the digital set-top box does not find channels. What to do in this case? In order;

start by checking the cable and plugs;
check the voltage supply from the console or from the power supply;
connect another antenna.

Let me remind you, if the antenna does not catch digital channels, then check its direction to the transmitting tower.

There is no reception of "numbers" on the TV

All of the above is also suitable if the TV does not pick up digital channels. Tuners with different sensitivities are installed in TVs, as well as in set-top boxes. Therefore, it is possible that some TVs operate normally from the antenna, while others from it are unstable.

The broadcasting of the Ostankino tower has finally switched to the new DVB-T2 standard - digital channels are no longer shown in DVB-T format. Residents of the city of Moscow and the Moscow region have turned off broadcasting since January 15, 2015, the analog range continues to broadcast as usual. The loss is associated with the program "Development of TV and Radio Broadcasting in the Russian Federation for 2009-2015", signed by Dmitry Medvedev back in 2009. The bottom line is the transition to a digital system from an analog one, this will make it possible to receive high-quality broadcast in all regions of Russia. Most television viewers from the provinces do not show more than one or two programs, and if they do, the picture quality leaves much to be desired. The transition program will be implemented in stages and until more than 95 percent of viewers are ready to accept the digit, the analog will not be completely disabled. TVs that only support DVB-T will not be able to receive 10 channels digitally. Those who have lost digital channels will need a built-in DVB-T2 tuner or a digital set-top box to watch terrestrial television. The previously installed antenna does not require replacement.

Digit broadcasting in DVB-T disappeared

What to do if digital channels are missing? It is not necessary to change the TV, especially since most often it was bought not so long ago. You need to buy a special tuner and connect it to your blue screen using an HDMI or RCA cable (tulips, bells). It's bad that there will be an additional device next to the TV and you will have to use two remotes, but it's still cheaper than buying a new one. Digital channels are not shown on old-style tuners, please note that DVB-T2 is indicated in the characteristics. The number of major federal programs has reached twenty, and their number will increase in the future.

At the beginning of 2015, 20 channels are stably showing, of which two are broadcast in high definition HD quality - First HD and Russia HD. To view HD, the connection must be made with an HDMI cable, not RCA (tulips) or SCART (comb). Another 10 channels are being received in test mode. Total - in Moscow and the Moscow region shows 20-30 digital channels, disappeared only in DVB-T... should be carried out by specialists with professional instruments and equipment. You can call the master from us, the service area is Moscow and the Moscow region.

Sometimes an error may appear on the TV screen - there is no signal, what should you do in such a situation? Such a breakdown is quite common. So why there is no signal on the TV, what could it be connected with and what to do to make it work.

Among the main reasons when TV does not work are:

there is no picture on the TV when there is a problem with the equipment itself;
if there is an inscription on the screen, there is no signal - this may mean that it is possible that preventive maintenance work is being carried out on the broadcasting tower;
in addition to all of the above, today external changes can also affect the work of TV - weather conditions: wind, snow, rain.

Let's consider each reason separately and decide what to do if there is no signal.

In order to understand what exactly happened, you first need to inspect the cable. If it is damaged and you can fix it yourself, you can proceed. If not, you will need the help of a specialist who will help you set everything up.

If everything is in order with the cable, then you need to check the satellite dish. It's not charming that you find damage on it. There may be such a situation when the plate, due to weather conditions, turned in the other direction. Pay attention to where the antennas of your neighbors are directed and fix everything.

The converter is responsible for the operation of your television. That is why you will not be able to work it yourself. In this case, professional help is required.

Preventive maintenance

If you saw “no signal” on the screen, then this may be due to the fact that the operator is carrying out preventive maintenance on the operation of television programs. This is extremely rare, and it is not possible to fight it.

All that is required in this case is just to wait until the work is completed. In order to understand whether work is really underway, you need to perform several actions:

you need a remote control. We are talking about the PU from the receiver;
then you need to enter the menu;
See if the inscription appears in the receiver menu.

Changing weather conditions

Of course, it is impossible for a person to cope with changes in the weather. But if you notice that branches from trees are interfering with your satellite dish or there is some other obstacle, then it is better to remove it. If this situation occurs when something constantly interferes with the satellite dish, then you just need to reinstall it in another place.

The satellite dish is not related to terrestrial repeaters and receives the signal directly from the satellite. You cannot connect to it.

When will analog TV be turned off?

In accordance with, the state support for analogue broadcasting will be completely stopped in 2018.

Decree of the President of the Russian Federation of June 24, 2009 N 715

"On all-Russian compulsory public television channels and radio channels"

As amended on: May 12, 2011, April 17, September 30, 2012, April 20, 2013, July 21, August 11, 2014, July 15, 2015

4. The Government of the Russian Federation shall ensure:

b) provision, in the manner prescribed by the Government of the Russian Federation, subsidies: to broadcasters - to reimburse the costs of payment for communication services provided by the federal state unitary enterprise "Russian Television and Radio Broadcasting Network" for the purpose of terrestrial analogue terrestrial broadcasting of all-Russian compulsory public TV channels and radio channels (including using communication networks of other operators) in settlements with a population of less than 100 thousand people, in 2011 - 2018, and for the purposes of digital terrestrial broadcasting of these TV channels and radio channels (including using communication networks of other operators) in settlements localities with a population of less than 100 thousand people - starting in 2019; Federal State Unitary Enterprise "Russian Television and Radio Broadcasting Network" - to reimburse the costs (part of the costs) associated with the implementation of digital terrestrial broadcasting of all-Russian compulsory public TV channels and radio channels in 2011 in settlements with a population of less than 100 thousand people, in 2012 - 2018 - in all settlements of the Russian Federation;

How to connect digital TV DVB-T2?

An antenna (indoor or outdoor), a set-top box or TV with a built-in tuner is required. In apartment buildings, a common antenna is most often absent. The signal in the home network is provided by cable operators, DVB-T2 is not in it.

Why is there no signal on the TV?

Provided that it was previously, it is necessary to check the connecting cords for damage, turn off and on the equipment, and automatically scan the channels.

What kind of antenna is needed for digital television?

Broadcasting is carried out in the decimeter range, respectively, any antenna will do. When buying a new antenna, pay attention to the DVB-T2 mark and the gain.

What is the difference between an active and a passive antenna?

A standard amplifier is installed on the active antenna, power is supplied from the power supply unit, which is located next to the TV, which is convenient for one TV. A separate amplifier can be connected to a passive antenna, and after that the signal can be divided into several points.

How to connect digital terrestrial television through an indoor antenna?

The use of an indoor antenna is possible only in the area of reliable coverage of the repeater, most often, it is within the line of sight of the tower.

Can I connect two TVs to one set-top box?

Technically, this is possible. Either directly or via an external RF modulator. But such a scheme is extremely inconvenient, both TVs will simultaneously show one program and the channels must be switched directly on the set-top box. It is more convenient to install an additional receiver.

Why is the digital terrestrial TV signal disappearing?

Insufficient signal level leads to periodic switching off of broadcasting. In such cases, a more powerful antenna and reinstallation at a higher point are necessary.

What cable should I use for TV wiring?

Coaxial cable with a resistance of 75 ohms, it is advisable not to buy a cable thinner than 6 mm. Any manufacturer can be. Remember - "Good is never cheap." If the cable is laid for life, it is better not to save.

Why are the channels encrypted?

Some channels may be encoded for broadcast testing purposes. At the beginning of 2018, there are no paid DVB-T2 channels.

More and more users are connecting interactive television, and there are several good reasons for this. Compared to analogue or cable TV broadcasting, it has many advantages, but there are also certain disadvantages. Most often, users are worried about why the digital TV set-top box freezes. Before finding a reliable solution, you need to understand how this type of TV works.

Users can be connected to iTV in several ways. Both in the case of interactive TV, and for a dedicated IPTV line, a special set-top box is required. If in the second case one channel is used for TV and the Internet, then in the second television will not depend on the speed of the Internet. If the picture is frozen, there is no need to immediately look for the cause of the breakdown. The first step is to check if the set-top box is connected correctly.

There may be several reasons for the problem:

Interruptions in the work of the provider.
The cable is damaged.
Fault in the console.
Problems with the router.

Some of the problems can be solved on your own, but it is better to contact your provider for help. When connected via an IPTV line, the picture will freeze due to the poor quality of the line itself or if the device does not work correctly. If you notice that the gadget is very hot, it is also recommended to contact the provider, it may need to be replaced.

Interactive TV uses one channel to broadcast TV programs and the Internet. Most of the broadcasts are broadcast in HD format, and it requires a wider channel to transmit information. If the digital TV set-top box does not work, a wider data transmission channel will be required to reduce the load during the simultaneous operation of several gadgets.

In case of a one-time freeze, you must reboot the STB. The gadget will check for software updates and install them automatically.

However, a reboot may not get rid of the problems, but lead to the fact that the gadget will freeze even more. This happens due to incorrect installation of updates. In this case, it is recommended to reset the device to factory settings.

Reasons for the breakdown of a digital set-top boxDVB-T2

In recent years, more and more countries are switching to digital television. This broadcast technology has many advantages. It is shielded from external interference, so the viewer can enjoy clearer picture and better sound. According to an international obligation, analog TV must be completely turned off.

Modern TVs have a built-in receiver, but if the device is not capable of receiving a digital channel, you will need to additionally buy a special DVB-T2 set-top box. A decimeter antenna is also connected.

There are also some disadvantages to digital TV broadcasting. While watching your favorite TV show, the picture freezes or disappears completely.

There are several most likely reasons why a digital TV set-top box freezes:

In the case of analog television, the picture is distorted, various noises appear, and colors disappear. In the case of digital broadcasting, the picture freezes. Also, a sign of a weak signal is cubes breaking the picture on the screen, and if the signal weakens even more, the picture disappears completely. Owners of satellite dishes often face a similar problem, but it usually arises during bad weather.

Bad weather

Its phenomenon is less pronounced, but in a strong thunderstorm, the prefix can completely freeze. The signal received from the tuner must be higher than the minimum value, otherwise in bad weather you will have to give up watching your favorite programs for a while. It is also worth checking if the antenna is correctly fixed, and inspecting all the connections that are in the path of the cable to the TV itself.

Digital television may not be shown for other reasons: an old receiver or a location outside the digital TV reception area. If we assume that the device itself is working properly, the reason is incorrect configuration.

The first step is to perform an automatic channel search, if it did not bring the expected results, it is recommended to perform manual tuning. If the problem is no signal, then this is a common symptom of a malfunctioning antenna or incorrect connection.