Smart TV does not find digital channels. What to do if the TV does not show: reasons and solutions. What to do if channels are missing

18.12.2023

TV has long moved from being a luxury item to being a “Must Have” along with smartphones and other smart devices. But sometimes something bad happens and the TV stops showing content.

In this article we will analyze the reasons and what to do in such a situation. The article is universal, suitable for all manufacturers from the Japanese to the Chinese: Samsung, LG, Sony, Philips, Supra, Mysteri, Xiaomi, Fusion and other brands.

Let's start with the commonplace and gradually move on to rare malfunctions.

If the TV does not work, the first thing we check is the presence of electricity in the outlets. Perhaps the traffic jams (automatic machines) were knocked out or there was a planned shutdown.

Batteries in the remote control

The second most popular and banal problem. Check the batteries in the remote control and try, 70% that the problem will be solved.

Broken

The device suddenly broke down - something clicked and the monitor stopped showing. Most likely the protective relay inside the case has tripped, and/or the fuse in the power supply has blown out. This happens during voltage surges (increase/decrease) or thunderstorms. One of the symptoms is that a black screen appears for a few seconds and everything returns to normal.

But there are more depressing consequences:

It smelled burning.
There was smoke.
Sparks fly.
Flames are visible.

Now let's move on to less dramatic episodes. If the TV has stopped showing, but there is sound (you can hear the characters in your favorite TV series talking), then the inverter or the backlight lamps themselves have burned out.

More details on manufacturers:

Inverter

An inverter is an electronic gizmo attached directly to the LCD matrix that transforms the current from the power supply into high voltage voltage and supplies it to lamps or LEDs. As a result, we see the glow of the screen and perceive the image displayed on the liquid crystal matrix.

Backlights

They burn “once or twice”. Especially for “Chinese handicrafts” such as Supra, Mysteri, Xiaomi, Fusion and other NO-NAME. This malfunction is easy to identify. When the TV is turned on, shine a flashlight on the black monitor; if there is flickering (picture change), then it is the inverter or lamps that have burned out.

If there is no pixel movement, the situation is bad, the screen may be broken. Few people undertake such repairs, replacing the entire module. The price tag for large diagonals can be inadequate, so if you have a warranty, run to the store (where you bought the equipment) or an authorized service center.

Not a very common problem, but it does happen. We turn on our brains and begin to remember when the TV started showing:

Darker, duller, as if there is not enough contrast.
In different colors - purple, black, white, red, blue, pink, green, in general - all the colors of the rainbow.
Was the image like a negative, the colors seemed to be in inversion (some people call this a thermal imager).
The content was displayed on half the screen.
The picture was streaked or spots appeared.
In rare cases, the image begins to appear upside down, as if bottom is up.

The listed symptoms indicate one thing - the display has long been asking for repairs, or delivery under warranty.

If something like this is just beginning, we take our feet in our hands and head to the workshop.

Now let's move on to smaller problems. For example, the TV does not show channels or only the volume indicator works on the monitor. The matter is fixable, the main thing is to read to the end to understand the processes.

Antenna

Connection to the broadcast network has been carried out using an antenna for many decades. In modern realities, digital television and others have appeared, but the problems remain the same.

For both options, the instructions will be the same:

Make sure that the connectors are securely connected and the plug is not lying somewhere behind.
Check the antenna cable; perhaps, as a result of mechanical damage (a break, the cat chewed it, rubbed against a door, etc.), the contact inside the wire was lost. Cut out the damaged piece and insert a new one.
We inspect the antenna for damage, rust, and its presence in place.
Most likely you will have to adjust the antenna by twisting it from side to side.

Analog

If the T2 digital set-top box was not installed, then you have analog television. Therefore, it is not surprising that TV:

Outputs a black and white image.
The picture has become worse or has ripples.
Not clear.
Vague (as if blurred).
With interference.

Digital

If the TV has a small black box, take a closer look; T2 or similar abbreviations should be written on the body. This means that you are watching free federal digital channels.

Sometimes it happens that the prefix allows:

Appearance of pictures (video with pauses).
Content in squares (cubes).
Dropped frames.
Presence of artifacts (extra pixels).

Let's check all the instructions just above.

Satellite television

Satellite television is a popular pastime these days, especially in remote places, cottages, etc. If you are the happy owner of a satellite receiver, and the TV does not show channels or just a black screen, we recommend using the instructions:

There is a storm outside, rain, thunderstorm, snow, hail, fog and other climatic disturbances - just wait it out, the communication channel with the satellite will be restored.
Check the payment for the annual subscription to access the channels.
Inspect the plate for dirt, cobwebs, or remaining water. If present, wipe gently without moving the position of the receiving device.
Make sure the satellite receiver is properly connected and in working order.
The Tricolor-TV card may come off (looks like a large SIM card) - push the plastic in as far as it will go.
In the worst case scenario, if the original position is shifted, you will have to call a technician to orient the antenna to the satellite. You won't be able to do this on your own.

Digital (from provider)

When the TV does not show digital channels from the Internet provider, or the picture spreads into artifacts, we recommend that you immediately call technical support. It is necessary to check the condition of the line and make sure that there are no problems when transmitting large volumes of data, typical for video broadcasts.

Check your connection

If all else fails, make sure that all plugs (Hdmi, RCA (tulips), optical cables) are in their connectors. If you have peripheral devices in the form, it is better to turn off the equipment for a while.

The signal has not been restored, then we check that the channel to which the receiver or set-top box is connected is selected. Settings are made using the remote control or buttons on the TV body.

Inappropriate input channel resolution

Sometimes problems arise when installing more modern equipment than the television itself. For example, when an old CRT TV refuses to recognize 4K resolution. There is only one option - change the equipment to a new one.

Ask a question to a virtual expert

If you still have questions, ask them to a virtual expert, the bot will help you find the problem and tell you what to do. You can talk to him about life or just chat, it will be interesting and informative!

What to do if there is no signal on the TV, why it doesn’t show from the antenna, digital channels have stopped working - owners of modern TV equipment often turn to service centers with these questions. In fact, most problems can be resolved quite easily on your own. It’s worth talking in more detail about how to do this and not damage the TV.

How can I determine the cause of the problem?

The lack of a television signal is a fairly common problem faced by both owners of modern Smart TVs and owners of analogue models. Here you need clarify the source of the data. For example, it shows the device from an antenna or satellite dish, or maybe it is connected to cable networks. In addition, it is worth checking whether the receiver is working, if it is installed, and whether the cable is fixed.

Among the common reasons why there is no signal on the TV, there are several.

Incorrect installation of the “plate”. In this case, the receiver may transmit a very weak signal or not transmit it at all. Separate channels may appear and disappear. In addition, the signal quality is affected by operating conditions: an icy “dish” always works worse.

Damaged cable. This happens especially often when the signal source is located outdoors. In this case, it can pass, but very weakly. Most often, the TV screen will simply show “No Signal.”

The built-in receiver or external set-top box is broken. Service center specialists can diagnose the breakdown more accurately. Independent attempts to disassemble a complex electronic device may result in its complete failure.

Does not show satellite or cable TV. Usually the problem appears only at certain hours, without any preliminary “symptoms” of signal deterioration. It is worth checking the data on the website of the operator - service provider. During maintenance work, TV signal reception will be unavailable. Data on the work can also be in the receiver menu, in the decoder settings section.

The signal from the satellite dish disappeared due to external reasons. This is usually due to interference or a change in antenna direction. For example, it can be displaced by a strong wind, hail, or a bird landing on top. And also a new building on neighboring plots may get in the way of stable reception. Finding a better antenna position will help solve the problem.

Smart TV version is outdated. If the old OS is no longer supported, the signal on the TV will disappear. You need to download the update and install it from a USB drive or connect the device to Wi-Fi. Set-top boxes usually update automatically.

These are the main problems, the causes of which the user can identify independently by superficially studying the problem. If you need a more in-depth diagnosis, you should first take a closer look at exactly what the screen looks like after loading, and what TV functions are available.

Typical problems

Problems arising with the supply of a stable television signal should always be considered in a comprehensive manner. If all external causes are excluded or they cannot be reliably established, It is worth paying close attention to the accompanying factors. For example, the presence of any image or inscriptions on the screen. All this data will help to get a more complete understanding of the source of the malfunction.

The image on the screen has disappeared

Complete or partial disappearance of the image usually indicates about technical problems in the TV itself. A more accurate “diagnosis” will depend on what can be established during self-diagnosis.

Blue background

Most often, when a user talks about the absence of a picture, they mean a blue background that appears instead of the broadcast image. If we are talking about CRT TV, we can talk about memory failure or breakdown of the video amplifier responsible for this tone. On a plasma panel, the source of this problem is failure of the signal processing unit. There are several of them; it is possible to determine exactly which module is faulty only in a workshop.

If a blue screen appears on your LED TV or LCD screen, the problem lies in the matrix. It needs a complete replacement, comparable to the cost of the device itself. A blue screen, on which there is an image - channel numbers, menu items, occurs when there is no signal. The reason may lie in the antenna or cable, as well as in the incorrectly selected operating mode of the device.

The image disappeared after turning it on

If the screensaver with the name of a brand or operating system on a modern LCD TV loads normally, and then the image disappears, you should look for a breakdown in the field of cable connection, tuner. Perhaps contact with the signal source has deteriorated due to a wire falling out of the socket. The image will be missing, perhaps the reason lies in disabling the broadcast of pictures from the remote control. The sound is broadcast in normal mode, the channels are switched. All that remains is to press the button that cancels the operation mode without a picture.

Black or partially black screen

A complete lack of response to turning on, a black screen usually indicates that the breakdown is quite serious. There are several possible reasons worth noting.

Faulty backlight. In this case, the TV retains all functions except adjusting the screen brightness. By shining a flashlight on it, you can see the image. The LED backlight is replaced at a service center. Doing the work yourself can damage the matrix or other parts.
The TV doesn't turn on at all, and there is a noticeable smell of burning around. Most likely, the reason is a surge in the mains voltage. You need to turn off the power to the device and contact a repair specialist.
A black screen with a horizontal stripe of light or bright color. The reason is personnel development. The problem occurs mainly with CRT TVs and can be solved by replacing the unit. A vertical stripe indicates a breakdown of the transformer in the horizontal scanning unit.
The TV turns on, the screen immediately goes blank. Most likely, the problem is a weak power supply from the network. You need to check the wire and power supply, the socket, and the presence of voltage throughout the apartment.
There is no sound, no image, the indicator is on. The video processor is probably broken.

No digital channels

The problem with the transition to a completely digital TV signal has led to a lot of questions among consumers. If your TV has a cable connection, instability of incoming data can be due to many factors. For example, with the influence of external interference: ignition systems on cars, birds, low quality of the general house signal amplifier. Do not assume that the TV or set-top box is broken. Sometimes, due to ongoing maintenance work and even bad weather, it can be quite difficult to catch a signal.

To minimize losses in the quality of data transmission via DVB-T2, you need to correctly position the cable through which it is connected. The higher the wire is located, the more interference will affect the signal. In addition, its distance from the set-top box itself - an external receiver or a built-in TV unit - also matters.

Loss of digital channels may be due to weather conditions: In winter, reception will be better than in summer, in hot weather. The presence of dense foliage on trees during warm periods of the year can screen the signal from an antenna installed on the street. If the problem persists for a long time, it makes sense to purchase an amplifier. It is placed next to the antenna, as close as possible. Reception of channels will become more reliable.

Connection through an external receiver - set-top box may be disrupted due to interruption of contact of the plug with the socket of the TV or the receiver itself. This happens especially often if the devices have been moved or shifted. The slightest effort or jerk will cause the SCART or “tulip” to stop transmitting the picture. In addition, a break may occur in the cable: it is worth purchasing a new one and testing it in operation.

Important! If not all, but only some channels disappear, the problem may be in receiving signals from several sources. Manual configuration of the set-top box will help solve the problem.

What does the inscription mean?

Usually the TV indicates a lack of signal on the monitor when it is turned on or during operation of the equipment. Modern Smart TVs issue such a system letter with hints. For example, the message may contain information about where exactly the cause of the loss is located: there is no contact with the network cable. Such information tips can be very useful for an inexperienced user who just wants to finish watching their favorite series or long-awaited blockbuster on TV.

The “No Signal” sign doesn’t have to be displayed all the time. Sometimes she interrupts the broadcast, then disappears. Such short-term interference is usually associated with passing by vehicles or exposure of the antenna to gusts of wind. The message “No signal” also appears before the TV turns off due to a drop in mains voltage. In any case, the reasons for the disappearance are not in the TV itself, but you need to look for them in external connection sources.

What does the signal level depend on?

The quality of a television signal, even in digital format, is a rather unstable concept. It may be affected by weather conditions: cloudiness, wind strength, and other external interference. If the TV showed poorly in the morning, and by the evening it stopped receiving a signal altogether, you should make sure that such sources of problems did not appear suddenly. For example, in heavy clouds or snowfall, the TV may display a blank screen until the interference disappears.

Appearance of a mechanical obstacle: a new building or structure can become a serious problem for broadcasting a television signal. In this case, you should find the optimal reception point by moving the antenna. The signal level on TVs working with DVB-T2 varies from 60 to 84 dBµV - these are standard values. The more noisy the image, the more difficult the adjustment will be. For each frequency this indicator will be different. The use of coaxial cables helps reduce the influence of external interference.

Since 2019, a systematic and widespread transition of television to digital television has begun in Russia, and terrestrial television will be turned off. A test broadcast mode has already been launched in some regions. Switching to digital makes it possible to receive high-quality images on your TV. But there are still problems. Sometimes residents have a question: “Why aren’t 20 digital television channels shown.”

If the TV is of an old generation, then a receiver is needed to receive the signal, or, in simple terms, a digital set-top box.

When you first start, TV channels are configured automatically. But there may be situations when you cannot see all the promised 20 channels on the TV.

Since these are fairly new technologies, we will talk about the reasons for this.

Why does digital television disappear on my TV?

Yes, our technology has not yet been fully developed and this can happen. But there is no reason to worry. There are a number of reasons, such as:

there was a failure in the device software;
TV signal does not reach the TV.

There are a number of other factors:

commissioning works are underway;
TV broadcasting has been stopped;
natural disasters.

But the first two are the main ones, which should first of all attract your attention.

Problems with the program

First, you should make sure that preventive measures are not being taken. This is quite easy to do.

You just need to go to the website http://rtrs.ru/ where you can find information about the time and duration of such work.

There may also be a corresponding notification on the screen with the digital set-top box menu.

There may also be a situation where the receiver shows only ten channels included in the first package, although recently everything was fine. You should check the level of signals from the second group.

If it is zero, the likely reason is that this multiplex is simply disabled. Most often this happens during test mode of TV operation.

There is nothing unusual about this. The current situation is that the first group of channels is mandatory throughout the Russian Federation.

The second multiplex may not have a signal due to limited funding and there is parallel analogue TV. That is, there are simply no free frequencies.

The sooner there is a widespread abandonment of analogue broadcasting, the sooner it will be possible to watch channels from a second multiplex throughout Russia. That is, digital television.

Problems with the receiving equipment

If the signal suddenly disappears, then you need to look for the reason, and there are not so many of them. Let's list the main ones:

The console itself is broken. If, when you turn on the receiver, not a single indicator lights up, this is obviously the reason and the device will not work.

But it happens that the indicators light up, but very dimly. In this case, the external adapter may break.

If you choose a similar 5-watt power supply (for example, from a router), it is quite possible that the set-top box will work.

Receiving antenna malfunction. An indoor antenna is practically impossible to break. But with the outside there is always such a possibility. Precipitation and thunderstorms can damage the antenna itself.

Damaged cable. A frayed cable can also affect signal reception. Due to its loss, all channels will not be shown. A thorough check of the cable and connections will be required. This is especially true if the cable is external.

If the braid is damaged, water may enter the cable and destroy the braid. Complete replacement of the external cable will help correct the situation.

If your TV is equipped with a built-in DVB set-top box, it is worth remembering that when asking where the channels on digital television disappeared, you need to know that they too can break.

Standard instructions for setting up digital television

So, you have decided to connect to digital television. What should be available?

Any working TV, maybe not the latest generation.
Digital set-top box (another name is receiver) with a 220V power supply.
The cable that connects the set-top box to the TV. As a rule, the set-top box already includes a “tulip” cable with three tips (left and right audio channel + video channel). The latest set-top boxes also have an HDMI output. This cable will have to be purchased separately.
To connect an external antenna you must also have your own cable.
Antenna for receiving TV signal. It is also possible to connect to cable television.

Now that the completeness has been checked, you can start connecting.

Important!
If the equipment is brought into the room from the cold in winter, it must be kept at room temperature for at least an hour. This is necessary to evaporate condensate, both on the surface of the device and inside it.

If it is possible to use an HDMI connection, it is better to use it. This will make it possible to improve the quality of the transmitted image. When connecting “tulips”, ensure that the colors on the cable and on the inputs of the set-top box match.
Connect a cable from the antenna or a cable from your provider to the antenna input.
Connect the set-top box to a 220V network.

A regular receiver is capable of receiving all twenty channels from the free package.

On the other hand, if your set-top box supports a Wi-Fi connection, there is a possibility of watching IPTV channels.

And here the opportunities to increase the number of received TV channels are also very great. In addition, it becomes available YOUTUBE, and WEATHER And NEWS FEEDRSA.

Automatic and manual search

So, all cables are connected. All that remains is to turn on the console. Depending on the model, when you turn it on for the first time, there is a possibility of automatic search and recognition of the channels available for this device.

If this does not happen, go to the settings section:

set the auto search mode;
select a country from the list;
indicate the TV broadcast format (DVB-T2).

After a short wait, a list of currently available TV channels will appear on the TV screen.

Be prepared to wait a while.

If the signal is good and stable, the channels will not be displayed all at once, but in batches while the receiver is being tuned.

10 channels in each package. As a result, a list of 20 available free broadcasting channels in Russia should appear.

You can also search for channels manually. First, you need to repeat the same steps as during auto search - select the country, TV broadcast format (DVB-T2) - but select the manual search mode.

In this mode, you will need to enter additional data. For example, the frequency used. In this mode, channels will be connected in stages.

Standard difficulties in receiving digital television (signal)

If you study user reviews about digital television, you can also find negative ones. There are difficulties with receiving certain channels. There are some situations that can be solved quite easily, and secondly, you cannot do without calling a specialist.

But almost always problems can be easily resolved by the consumer himself. Cases of no signal due to the fault of the broadcaster are very rare.

And if, for example, it doesn’t show only Russia 1 On digital television, most likely, the equipment is being serviced by the provider itself.

Such prevention is necessary and after a few hours broadcasting resumes again.

So, what might the owner of a digital set-top box face?

Let's look at typical problems when receiving a digital signal.

The received signal level is very low.

The question may also arise, why does digital television sometimes freeze? This problem is quite common.

This can be solved by more precise adjustment of the antenna, moving it to another place, increasing the height. It may be necessary to completely replace the antenna with a better one.

Input level is very high

If the input signal is too high, this can also cause problems in the transmitter.

This can be caused either by its close location or by the presence of a maximum power amplifier on the receiving antenna.

We also look at the signal level indicator. If the level is 100.% but the quality is 0%, this indicates what the problem is.

Alternatively, receiving the signal via an indoor antenna will help. Or remove the amplifier. Now the “digit” will not hang.

Cables

Cables have already been mentioned earlier. If the coaxial cable is damaged, it may reduce signal strength or even not be received at all. And the first step is to visually check the integrity of the cables.

When solving the problem of why all digital television channels are not shown at once, it is with the cable that you should start looking for the problem.

Normally, the resistance is several tens of ohms. Readings that are too large or small indicate a break or short circuit.

If you fix all the problems, then the channels will not disappear

Splitters and connectors

A large number of splitters on the line along which the signal from the antenna passes also affects its quality. Each such connector increases the resistance and reduces the level of the received picture.

Any connectors tend to oxidize and lose conductivity. Therefore, the fewer there are, the better. And you should not skimp on installation. The better the connector, the better.

Interference

We are constantly surrounded by radio waves coming from household devices. There are not so few of them. From mobile phones and Wi-Fi modems to microwaves and cars.

And there is no escape from this – progress! To avoid problems when watching TV channels, the installation of the receiving antenna should be treated with special attention and diligence.

Why are only 10 out of 20 digital channels shown?

In order to understand this issue, you need to know about the fundamental difference between digital television and analogue. This is the new standard for on-air hanging.

In analogue broadcasting, each individual channel has a frequency line dedicated to it.

In digital, the approach can be radically different. Here broadcasting occurs in batches, each of which can have from 8 to 12 channels on one encoded frequency.

And decoding takes place in the tuner itself. And if it happens that only 10 of the declared 20 channels are shown, this indicates insufficient power of the carrier frequencies.

In such a situation, changing the position of the receiving antenna can help:

change direction;
change height (higher or lower);
install a signal amplifier on the antenna.

The picture on the screen will help you catch the required power. There is an “i” button on the console remote control. Click it. Two bars will appear on the screen - “power” and “quality”.

By changing the position of the antenna, you need to achieve a received power of about 50 - 60%. Then start the auto search again. The missing channels will appear again and will no longer be shown.

It is also worth checking the TV if it already has a built-in tuner. The absence of a second multiplex may be the reason that it is not able to catch all channels. Some broadcast channel may disappear.

RESULT

Now we can say with confidence that analogue broadcasting is disappearing, giving way to “digital”, which is gaining momentum. Currently, every resident can watch the federal channel in excellent quality.

Watching TV after a hard day at work is a daily ritual for any person. When connecting DVB T2, no problems or malfunctions are expected, but you want to watch your favorite channels. Having turned on the TV and finding silence in the broadcast, digital users wonder why the channels have disappeared and the set-top box does not show.

As standard, 20 channels are available for viewing via a digital tuner. The main reasons leading to interruptions in the air:

repair work at the TV station, in which case several channels will be unavailable;
problems with the equipment receiving the signal.

Often the breakdown can be fixed on its own without contacting service. Each variant of the problem has its own solutions; in the first case, the broadcast will resume upon completion of technical work.

Technological violations or technical work

Technical problems at the station where the signal comes from are the main reason for the absence of some channels. If the broadcast is not restored for a long time, you can try to find the programs yourself. What to do:

go to “Settings” on TV;
Through the “Automatic settings” menu, we activate “Auto search”, the system will begin scanning frequencies for missing channels;
use “Manual search settings” in cases where the automatic one did not produce results.

To start a search in manual mode, you will first need to find a frequency map of Russia on the Internet, which will indicate what parameters are being broadcast. The exception is the situation when the channel ceased to exist and disappeared from the air.

Incorrect DRE channel encoding

The digital set-top box does not show - a common problem when the digital tuner is not used for a long time. Broadcasting of digital channels will resume automatically after being connected to the network. Correct data synchronization may require several hours; during this period the receiver cannot be turned off from the network, otherwise the DRE encoding will not be corrected.

No digital tuner registration

At least 2 channels stopped showing - a direct result of the lack of tuner registration. To check that the equipment is included in the system, you need to go to the service provider’s website. In the registration section, the serial number is checked, if missing, it is entered on the site. After saving the data, the receiver reboots.

End of subscription to services provided by the provider

If you fail to pay for the satellite television service on time, a message appears on the screen stating that the channels are paid. With this message, all broadcasts are blocked and watching TV shows is impossible. The trouble can be corrected by paying the bills. A completely different case is when a message pops up on a free channel; in such a situation, the provider must warn that the channel has become paid and a subscription is required to view it.

Effect of bad weather on the antenna

Heavy rains cause interruptions in broadcasting, bad weather interferes with high-quality signal transmission. In such cases, there is no need to move the antenna or take it out of the apartment outside; broadcasting will resume when the weather stabilizes. All that needs to be done afterwards is to check the connecting cable for integrity and, if broken, replace it.

No signal

There is no signal - the inscription pops up unexpectedly and leads to bewilderment. There can be many reasons for the loss of connection; you should look for the problem gradually:

check the integrity of the wires; signs of oxidation or breaks lead to deterioration and complete loss of the signal;
turn on the set-top box and see the menu display; on the back of the tuner there is an RCA connector, the plate of which may be damaged;
check the possibility of connecting digital channels in the house.

Cases when a user buys T2 and does not check the digital card are among the most common.

Incompatible software

One of the reasons for broadcasting failures is a system failure in the software. You can check the incompatibility by entering the “Restore Channels” mode, when an action error appears:

“CHANEL” and “TV/Radio” are pressed simultaneously, the buttons are located on the control panel and the receiver itself;
A loading window appears where “STANDBY” is selected.

Antenna settings failure

Half of the channels do not show - direct evidence of failures in the antenna setup. A technician can solve the problem, so you should call your provider and order additional setup. There may also be poor communication between the equipment.

Insufficient antenna power

The quality of channel broadcasting depends on the signal level. The closer the tower is to your home, the clearer the broadcast will be. If several channels are lost, you should rotate the antenna to improve the signal. To check the quality, press “i”; after pressing, bars with levels will appear on the screen; with a value of 50% or less, the channel will not be shown. The solution to the situation would be to purchase a powerful antenna or amplifier. At a distance of 2 km from the house to the tower, an indoor antenna is enough for high-quality work. When using a collective antenna, the power drops and the signal branches out.

Damage to the console

If channels on a digital set-top box are missing, you should check the tuner for serviceability. Breakdown alarms:

The main menu of the receiver is not displayed, but there is no mechanical damage to the connectors;
The antenna is configured correctly, but when switching channels there is no information about the signal quality.

If you notice one of the signs, you should call a specialist for diagnosis.

Damage to the TV

If the equipment does not respond to pressing buttons, it can cause serious problems and require lengthy repairs in the service. Before calling the wizard, you should perform a basic check:

see if the cord is unplugged from the socket and if there is light in the house; if there is a voltage drop, the protection may work and turn off the TV for a while;
check the serviceability of the remote control and the charge of the batteries;
remove unnecessary objects from the surface of the set-top box; the presence of physical interference blocks the signal;
check the serviceability of the indicators; when using the remote control, the indicator reacts;
Check the modes; when the sleep function is turned on, the screen will be black.

In cases where the TV was damaged during a thunderstorm, it is better to call a repairman.

Why does my digital TV set-top box show in black and white?

When turned on, the screen shows in black and white - direct evidence of a malfunction in the tuner. Causes of malfunction:

the incoming signal is weak and is only enough for picture and sound;
poor connection of wires, eliminated by reconnecting the system;
When setting up, the wrong mode was set.

A black and white picture occurs when the standard color rendering mode is used.

The channels on the digital set-top box are missing - what to do?

The channels stopped showing after the first connection of the set-top box - all equipment needs to be reconnected. The situation is different when the programs suddenly disappear, in this case the integrity of the wires is checked and a call is made to the provider. In the case when channels 11 to 20 are no longer shown, a repeat search is performed, since the frequency may have changed.

Automatic search

If channels are lost, before calling the wizard, you can try to fix the problem yourself; for this, the search is automatically configured. Procedure:

go to the main “Menu” via the button on the remote control;
from the menu that opens, select “Settings” - “Automatic”;
go to the “Search” column and wait for the download to complete.

After completion, 20 channels will become available; if there are failures during the operation or the results are not saved, the programs may be lost.

Manual search

Manual search is more reliable, but requires entering additional information. It differs from automatic in that the frequency, speed and broadcast satellite are set manually. Once you have completed entering the information, go to the settings; when selected, click “Manual search”.

What to do if there is no sound on your digital TV set-top box

When you turn it on, you see a picture of a silent movie, which means the sound on the TV is incorrectly configured or the format is not supported. Most channels use stereo sound, some programs support the Dolby format. The solution to the problem is to adjust the audio track.

Standard difficulties in receiving a digital signal

A common digital signal problem is incompatibility between the tuner and antenna. By choosing an antenna separately from the receiver, you can make a mistake with the range and power. Such incompatibility leads to equipment malfunction and, as a result, complete or partial loss of channels.

When the TV stops working, we, as a rule, call a technician to your home or take the equipment to a special office that does repairs. What to do when the channels stop showing? This problem can often be eliminated on your own, without resorting to the help of a specialist, the main thing is to determine its cause. Therefore, in this article we will tell you why television does not show.

Main causes of problems

The reasons why satellite or digital television may stop functioning can be divided into two main groups - program-related and equipment-related.

The first category includes situations when television channels are lost. You should search for them again, after resetting the settings using the remote control. You can also do this through the receiver: remove and reinstall the card. This is recommended in extreme cases, so it is better to simply turn off the receiver and turn it on again first.

In addition, it is important to change channels using the receiver's remote control, since the TV remote control cannot change satellite or digital television channels. To have access to the menu and channel list of the receiver, you need to use the TV remote control to switch to AV mode.

In addition, you should choose your region correctly. If you see the message “coded channel”, then either the channel has expired or this channel is not included in the current package. Channel packages are usually paid for for a period of one year, that is, the reason that you cannot watch it is often the lack of payment. When you make a payment, this channel will turn on within eight hours from the moment of payment.

Other reasons why television does not show are the following:

Receiver malfunction. An important sign that the receiver is working properly is the light of the indicator light. If the light does not light up when you turn it on, then either the problem is a faulty receiver or a lack of electrical current in the extension cord or wires.
The card is not inserted correctly. The card should be inserted into the special hole as shown in the instructions. Therefore, remove the card and reinsert it as needed.
Satellite dish malfunction.
Incorrect wire connection. Check their serviceability and connection several times.

Please remember that different weather conditions may also affect the operation of the television. It is possible that there was an accident somewhere at the station.

Problems with TV

The problem of missing channels may be due to a malfunction of the TV itself. But don’t rush to say goodbye to your equipment or send it in for repair. First check the connection of the power cord, and then the flow of electric current into the outlet itself.

If you turn on the TV using the remote control, its batteries may be dead. When the TV light is on, but it does not turn on with the remote control, then the reason is probably not a malfunction of the TV, but a problem with the remote control.

Sometimes when the TV turns on but only shows a black screen, the reason is your “manipulation” with the remote control. In this situation, you should switch to another mode.

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