Why is digital tv not working
Seal
Most of the country's territory is already covered by digital terrestrial TV broadcasting, broadcasting is stable, but sometimes there are blackouts. This article is not only about why digital television does not work, although before that everything was in order, but about all cases of problems with it.
When you turn on the set-top box for the first time, you are prompted to search for digital channels, but the set-top box does not find any channels. There were cases of changing the order of the channels, this also leads to the need to reconfigure the set-top box or TV, but the most common cases are when the set-top box showed yesterday, but not today.
Reasons why they stopped catching digital channels
- termination of the broadcast;
- weather;
- equipment malfunction.
Broadcast termination
When carrying out maintenance work on the site rtrs.ru in your region, you can find information about the time of their implementation, while the screen usually displays a setting table.
If the 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, then 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 information has been collected, the broadcast is turned off.
Package 1, as already noted, is already being broadcast over most of the country and it is mandatory, unlike package 2. Difficulties with the introduction of package 2 are associated with analogue television broadcasting, as there are not enough free frequencies.
The cessation of analogue television broadcasting in 2018 will speed up the inclusion of 2 multiplexes.
Of course, an emergency shutdown of broadcasting due to a malfunction is also possible, but this is unlikely.
Weather
Those who have already dealt with satellite equipment know that in heavy rain, and especially when snow sticks to the “plate”, the image crumbles into squares or disappears completely. This also applies to why digital television does not show well in bad weather. Why doesn't digital TV show today.
You can identify this 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 - it is to increase the signal as close as possible to 100%, then any bad weather will be nothing.
Hardware failure
If digital television does not work completely, then here you need to divide it into, then what exactly is the problem that something does not work. It could be:
- device malfunction;
- cable and connections failure;
- antenna failure.
Attachment not working
There is probably no point in dwelling in particular detail 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 signaling that it is turned on will not light up, or it will glow dimly.
Many consoles have a separate 5 volt power supply. It is usually standard and suitable for many devices (for example, a router) and you can check the serviceability by a simple replacement.
Checking the output voltage with a multimeter may not give anything, since in the absence of a load, the measurement can show the required 5 volts.
The set-top box is constantly rebooting or the splash screen is simply shown, and the execution of commands from the remote control or panel does not occur.
Cable and connection failure
In this case, more than one channel does not work, as the signal will be lost. Look carefully at all connections and not the integrity of the cable. 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 is destroyed.
Antenna failure
Indoor antennas rarely break, but outdoor ones often enough. Rarely from moisture, but from thunderstorms quite often. How many do not 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 set-top box 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.
No digital reception on TV
All of the above is also suitable if the TV does not catch digital channels. In TVs, as in set-top boxes, tuners with different sensitivities are installed. Therefore, it is possible that some TVs work normally from the antenna, while others from it are unstable.
