What to do when the TV does not catch digital channels

Today, more and more people prefer digital television to analog. 20 channels are available for free use, featuring high image quality and good sound. To broadcast digitally, almost all modern television panels are equipped with a built-in DVB-T2 tuner, and for older television sets, you can purchase and connect a digital set-top box. But sometimes channels may not be displayed at all or only analogue ones may be broadcast. This can happen both when setting up equipment, and spontaneously for no apparent reason. To understand why the TV does not find digital channels, and what to do in this situation, you need to understand the principles of operation of such television and the procedure for setting up equipment for reception. All about the possible problems that may arise during the connection process, and methods for their elimination - in the material below.

The principle of operation of digital television

Digital TV is the latest technology that delivers superb picture and sound quality and offers more TV programs and additional features, for example, interactive TV, video on demand, subtitles, blocking certain TV channels, electronic guide. The principle of operation is simple: the encoded audio and video signal is transmitted at radio frequencies in the form of a stream similar to that which enters a PC when watching video on the Internet.

Thanks to compression and a digital algorithm, it became possible to send a much larger number of TV channels and radio stations than was possible on analogue television. Another benefit of digital TV is immunity to interference and the absence of stripes, a blurry picture of poor quality. Either a good picture is displayed on the TV, or it is not at all.

On a note! In some cases, when broadcasting, the video may crumble into squares, sometimes disappear and reappear after a while. This is due to the operation of the antenna and is eliminated after its adjustment, replacement or installation of an amplifier.

Ways to receive digital TV channels

To date, there are several ways to receive digital channels:

• ethereal;
• cable;
• satellite.

signal for essentialTV distributed by ground relay towers. To receive it, you can use an outdoor or indoor antenna. This is an absolutely free method, but the signal to the user is often weak. Its intensity depends on the location of the tower, weather conditions or other factors.

Cable TV found in apartment buildings. In this case, the signal is transmitted through a cable coming from a common collective antenna. Such services are provided by the operator RTS Telecom, MTS, TTK, as well as other companies. Disadvantages include limited availability (for private homes, this type of television is usually not applicable) and subscription fees.

For satelliteTV the signal is broadcast from satellites, and reception is carried out through a special dish. This method ensures the reception of the largest number of TV channels. The disadvantages include the annual or monthly payment and the need to purchase special equipment.

Thus, the least costly, simple and publicly available way to receive digital television is to install and configure an on-air antenna. In order to stably catch a signal, the user, in addition to the antenna, will need a DVB-T2 digital receiver, which is produced by BBK, Supra, D-Color, Rolsen and others. Many modern TVs already have a built-in digital tuner, as you can see by looking at the specifications of the device in the user manual. In this case, you do not need to buy an additional receiver. Antenna for reception can be used a conventional analog, it all depends on the signal level and the remoteness of the tower.

On a note! The list of free TV channels for 2018 is divided into two multiplexes operating on different frequencies and channels, which vary depending on the region. In total, 20 television channels and three radio stations are available for viewing.

Reasons for the lack of digital TV channels and their elimination

If the user has installed an on-air antenna, launched an auto search, but the TV did not find the channels, this indicates problems: with signal reception (that is, with an antenna), with the method of connecting equipment, with settings, or with the devices themselves. How to diagnose and eliminate the cause - in the material below.

Antenna

First of all, you should pay attention to the antenna. If MW antennas are used to receive an analog signal, then . Decimeter antennas are more compact, but often combined devices are offered for sale that are suitable for receiving different ranges. From such antennas, you can remove the long structural elements that are necessary to receive a meter signal, and then you get a good compact decimeter device of a small size.

Some users, instead of a decimeter antenna, install a Polish (or “grid”) antenna, which is notable for its low cost. It is also suitable for digital signal reception, but in some cases (depending on the installation location) it may be necessary to dismantling the amplifier. There is a high probability of this if the tower is nearby - then turning on the amplifier can lead to the disappearance of a very strong signal.

Advice! It is not recommended to use an indoor antenna for receiving digital television, since a positive result is possible only in areas with a very good signal. Otherwise, the user may encounter the fact that the found channels will regularly disappear, and the image will crumble into squares and often freeze.

To receive digital channels stably, the antenna must be properly installed. It must be directed towards the tower (you should be guided in the direction of the antennas from neighboring houses / apartments), and there should be no obstacles in front of the device - trees, buildings, etc., for which it is desirable to raise it as high as possible.

Setting

In addition to the antenna, software problems can also provoke the absence of digital TV channels. To fix them, do one of the following:

• during the search for TV channels in the field "Country" set the value "Other";
• search for channels in manual mode;
• reset the TV (if the tuner is built-in) or the receiver (if an external device is used) to the factory settings and search for TV channels again;
• update the device firmware.

If the performed action did not bring a positive result, all of the above should be consistently carried out.

If the manipulations carried out with the antenna or device settings did not fix the problem, it is worth checking the cable - it may be broken or burned out. Also need inspect the plug and connections- the contact may disappear at the site of one of the twists.

Advice! Checking the plugs, connectors and cable should first be performed if the TV previously worked properly, but suddenly stopped showing TV channels.

To rule out a malfunction of the TV, you need search for channels on it using a different antenna, obviously working. Further, with the TV channels tuned, you need to connect it to your own antenna and in this way look for the problem. If the user's actions are effective, that is, an image appears on the TV with the antenna cable connected, then you will have to purchase a new antenna or cable. Otherwise, you will need to contact the telemaster.

General procedure for tuning digital channels

You can set up your TV or receiver to receive digital TV channels automatically or manually. The first method is used in case of reliable signal reception, the second - with an unstable stream or in a situation where the TV does not see channels through auto search.

Yes, to run automatic search you need to plug the TV into a power outlet, connect an antenna or receiver and start detecting digital channels, then wait for the process to finish and save the result.

If the TV does not pick up channels in automatic mode, you can start manual search. To do this, you will need to know information about the channels and frequencies on which the signal of each multiplex in the user's region is transmitted. In the TV menu, select the desired mode, enter these parameters and start the search. At the end of the process, the result should be saved.

Features of setting up television receivers of some brands

On TVs from different manufacturers, digital channel tuning is performed differently. Below are the customization methods using the most popular brands as an example.

LG

The process of setting up digital channels on LG TV panels is as follows.

On a note! On various models of LG TVs, the process of searching for digital TV channels looks similar, the difference can only be in the names of the sections in the menu.

Sony Bravia

In a similar way, a search for digital television is also performed on television receivers from other manufacturers. However there are some differences in access path to the beginning of the process for Sony Bravia TVs. So, automatic tuning will be carried out as follows:

• press the remote control "Home" or "Menu";
• click "Settings", and then - "Auto tuning of digital channels";
• choose digital, analog or both;
• click "Ether";
• to start the search, click "Start";

• save changes when the process ends.

In a similar way, but with some differences in the names of the sections in the TV menu, automatic and manual tuning of digital television through the antenna is performed on devices from Samsung, Philips, Toshiba and other brands.

According to the statements of the Government of the Russian Federation, by the end of 2018, analogue television broadcasting will be terminated at the state level, so today digital television is broadcast almost everywhere. Unlike analog, it provides a bright and detailed picture, good sound and more channels, some of which are transmitted in HD resolution. The easiest way to set up such a television on your TV panel is to buy and properly install an over-the-air antenna, and then perform an automatic or manual channel search.