Many people are faced with the problem when, after purchase, their TV does not pick up channels. Do not immediately get upset and rush to return the goods back to the store. Often, most problems can be solved by yourself.

Digital broadcasting is a technology in which the transmission of picture and sound occurs using compressed coded signals. This method transmission has many advantages over analog:

  • excellent quality of transmitted picture and sound;
  • immunity from interference;
  • ability to transfer a large number of channels;
  • simple and fast setup;
  • Internet access.

Reasons for the problem

In fact, the reasons why the TV does not find channels is huge. Let's look at the most common of them:

  1. Incorrect UHF antenna type. It is possible that the antenna you have installed is not suitable for digital channels.
  2. Wrong direction of TV antenna. This problem may occur due to the location of the antenna in opposite side from the main broadcasting station.
  3. The receiver is disabled or defective. Such an option is not excluded. It is worth carefully checking the correct connection of the receiver, as well as its performance.
  4. Very weak reception signal. If, after checking all the previous reasons, you have not found any problems, it is worth checking your receiving device. It is possible that its signal is not enough to find channels.
  5. Old firmware version. Outdated TV firmware can also cause this problem. You can update the firmware yourself by downloading and installing the required file from the official website of your TV model. If you have equipment from Samsung, respectively, you need to go to the Samsung.com website. However, we advise you to refer this matter to professional hands by contacting the service center.
  6. Read also.

How to fix the problem?

If you still do not know why your TV does not find digital channels, we will try to explain in detail the solution to this issue.

Connection methods

It is possible that this problem occurs due to the wrong way to connect to digital broadcasting. Each method has advantages and disadvantages. However, before you start searching for channels, you must connect the equipment correctly. Consider these options:

  • Using a decimeter antenna. In this case, you need to connect a TV antenna and an amplifier to your signal receiver, then connect it to your TV. Next, select auto search and wait for the result.
  • Via cable. A large number of providers provide services digital television. Almost all modern TVs have built-in signal cards. In this case, to receive a signal, just plug the cable into the jack and turn on automatic channel search. Of course, this service is paid.

Search settings

It is possible that the problem lies in the wrong search settings. The setup scheme in all TVs is almost the same, so you should not have any difficulties. In this case, we recommend that you do the following manipulations in order to make sure that the settings are correct:

  1. Enter the "Settings" or "Broadcast" section.
  2. Locate the "Search for channels" option.
  3. Click on "Auto Search" or "Auto Setup".
  4. Select your connection type (described above).
  5. Select the search mode "Full" and the type of channels you want to search (analogue or digital).
  6. Click Search or Scan.
  7. Sort the found ones.

Thereafter correct setting search will be completed. If you were unable to catch more than one channel, we advise you to read the factory instructions for your TV or receiver. Perhaps you will find a solution to this problem there. IN last resort, you need to contact the TV tuning specialists who will find and fix the problem.

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

Users can be connected to interactive television by several methods. Both in the case of interactive TV and 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 case 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. First of all, it is recommended to check whether the set-top box is connected correctly.

There can be several reasons for the problem:

  1. Interruptions in the work of the provider.
  2. The cable is damaged.
  3. Attachment error.
  4. Router problems.

Some problems can be solved on your own, but it is better to seek help from the provider. 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 have to be replaced.

Interactive TV uses one channel to transmit TV programs and the Internet. Most programs are broadcast in HD, and it requires a wider channel to pass information. If the digital TV set-top box is not working, 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 hang, you must restart the console. The gadget will check for updates in software and automatically install them.

However, rebooting may not get rid of problems, but may cause the gadget to freeze even more. This is due to incorrect installation of updates. In this case, it is recommended to reset the device to factory settings.

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

IN last years all more countries switch to digital television. This technology broadcasting has many advantages. It is protected from external interference, so the viewer can enjoy a clearer picture and good sound. According to international obligation, analog TV must be turned off completely.


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.

Digital broadcasting also has some disadvantages. While watching your favorite TV show, the picture freezes or disappears completely.

There are several most probable causes on which the digital television set-top box hangs:

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


Bad weather

Its phenomenon is less pronounced, but in a severe thunderstorm, the prefix can completely freeze. The signal received from the tuner must be above the minimum value, otherwise in bad weather you will have to temporarily stop watching your favorite programs. It is also worth checking whether the antenna is properly fixed, and inspect all the connections that are on the cable path to the TV itself.

Digital TV may not show for other reasons: old receiver or location outside the digital TV reception area. Assuming that the device itself is working properly, the cause is an incorrect setting.

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

Let's talk about the most common problems with receiving a terrestrial television signal on DVB-T2 set-top boxes. The page was created in response to the most frequently asked questions of our customers.

  • No signal
  • Lack of reception
  • Noise, poor picture quality
  • Lack of some digital terrestrial television channels.
In almost all cases, the problems are on the consumer's side - cases of absence or problems with the signal from the broadcaster, such as maintenance, are very rare, sometimes lasting several hours.

Electronic devices, unfortunately, also break down, like antennas. Antennas installed on the roofs of houses during the year, and sometimes for many years, are exposed to atmospheric conditions - frost, heat, snow and rain, and sometimes poor-quality or inaccurate installation can lead to moisture penetration into cables, splitters, amplifiers and the problem will appear at the most unexpected moment.


Let's divide the problem into two parts:

  • the complete absence of a television signal - you do not see the image, and of course you do not hear anything.
  • interference, interruptions in the transmission - that is, the freeze of the image, displayed as "pixels - crumbling into cubes", as well as the absence of some channels or the entire multiplex.
Complete lack of TV signal

If receiving through a receiver, start by checking to see if the signal from the receiver is getting to the TV. To do this, just see if the receiver's menu is displayed on the TV screen. If there is no menu, this means that there is no connection between the tuner and the TV and you need to check HDMI (or SCART) signal cable.

Check if there is antenna in place. This is not a joke - a poorly installed antenna, an old mast, can lead to a collapse of the structure, and an antenna mounted on a pipe yesterday can already lie on the roof or under the neighbor's balcony today. There are also cases of antenna theft or vandalism if the antenna is installed in an accessible location, such as on the roof of a multi-storey building.

Check if it's correct antenna cable connected to a tuner / TV. You may have forgotten to connect all the cables, or the cables may have been disconnected after cleaning the room or due to other physical impact.

Ask a neighbor, or call and ask them if everything is okay with their signal. If yes, and everything is in order with the antenna mast, as well as with the connections, then we are looking for the problem further.

Do you have an amplified antenna, make sure AC adapter connected, for example, if the LED is on (if any) - if the LED is not on, the power supply may not be connected to the network or may be damaged.

If everything is in order here, then only the option of replacing the elements remains. Use to check for example the tuner of a neighbor, or a friend. The comparative method will always give an answer where exactly the problem is.

Interference, interruptions in transmission



The most common reasons for poor reception are improper installation of the antenna or an incorrectly chosen place for its installation, as well as the use of low-quality components, such as cables, developers, etc.

Overview of the antenna system

Antenna

If everything worked yesterday, but today it doesn’t, then you should see the antenna itself - still the presence, the presence of all its parts, the connected cable. A common mistake is to isolate the amplifier / cable connection in plastic bags, or cans, which are supposed to protect the device from water. But basically it causes the opposite effect - water gets in anyway, do not forget at least about the condensate formed from temperature changes, and the insulation effectively leaves moisture in the middle. From which, after a rather short time, the junction will noticeably oxidize or even rot ...

It is necessary to carefully check everything and, if necessary, repair or replace components.


Installing or changing antenna settings

Do not forget that your antenna must meet the reception conditions. Due to dense buildings in cities, the signal does not spread evenly. Evaluate which antenna will be suitable for your receiving location.

In a nutshell:

External antenna- it will definitely work better in most cases, it can be easily directed towards the transmitting center, obtaining the maximum signal quality. In the case of a large distance from the transmitting station, developed various systems signal quality enhancement. But do not forget that the antennas are subject to various kinds of interference.

indoor antenna- can be used if you live near the transmitting station, optimally if you see it through the window, even if this distance is several kilometers. In other cases, an indoor antenna may not be sufficient for stable reception.

Our location- we need to know where the nearest transmitting center is located in order to install the antenna towards it. If you can see it, just a directional antenna without an amplifier is enough for you.

Antenna installation height- the higher above the ground the antenna is installed, the better. Preferably, of course, on the roof.


Indicators - signal power and quality

After connecting the installed antenna to the TV or receiver, check the signal strength. Currently, almost every receiver has a signal level and quality indicator in the menu.

Signal strength is a measure that determines the level at which the signal reaches us. If the signal level is low (usually less than 50%), the signal contains too much interference and it will be difficult for the receiver to receive it.

Another important indicator is signal quality. This parameter determines the "purity" of the digital signal that reaches your antenna. If the signal strength is bad, or if the data stream is broken somewhere along the way, a lot of errors occur. If the number of such errors is small, the tuner is able to restore and give us a high-quality image and sound, but if there are too many errors, we will see the picture crumble into cubes - “pixels”, and we will also hear sound distortion, or the image display will completely stop. Minimum value for good quality The signal is about 70% - below there are already problems with reception.

More often, both parameters "go hand in hand" - that is, for example, the signal level is 80% quality 95% and this result can be considered very good. It is worth noting that the image and sound quality do not differ at 70%, 80% or even 100%. The image won't be sharper, colors won't be better, and white won't be whiter, so you don't have to fight every percentage to get to 100%.

Most Common Problems

Low signal

The most common reason for poor reception too low level signal. Most likely, the only solution is to fine-tune the antenna, either reinstall it in a different place or higher, where the signal level will be better, or use a different, better antenna.

Too much high level signal

The reception problem can also be a too high signal level. Being close to the transmitter and installing a powerful amplifier on the antenna may result in interference or inability to receive the signal. The easiest way to diagnose a problem is when the signal strength indicator shows 100% and the quality is 0%. Therefore, you will probably have to abandon the amplifier or, possibly, use an indoor antenna.

Cables

No less significant influence on the signal that enters your TV receiver has a coaxial cable. An old cable that has cracked or is already crumbling, or a low-quality cheap cable bought on the market from an unscrupulous seller, can also cause a decrease in signal level or even its absence if there is a high-quality and properly installed antenna.


Splitters and connectors

The quality and quantity of splitters and connectors affects the signal that goes to our TVs or receivers. Each of these passive components contributes to lowering the signal level. Regardless of the connection, especially on the outside, it can lead to rapid oxidation of the connections and therefore to a significant deterioration in the level and quality of the signal. If possible, they should be installed minimal amount and of course good quality.


Interference

Around us (and our antennas) many transmitting devices are working simultaneously - mobile phones, modems, routers, alarms, CB radios, radio relay lines, etc. Radio waves received from other frequency bands may interfere with television reception. Interference can also be caused by devices that do not have a transmitter - microwaves, fluorescent lamps, electric motors, and even cars. This is why it is so important that antenna installation is done with due diligence, otherwise careless installation will result in failure. quality work reception system, and, accordingly, to problems when watching TV channels.

This article will discuss the situation when, instead of a television picture of your favorite TV channel You receive the message "No signal". At the same time, I will make a reservation that you receive a television picture from a satellite receiver. It does not matter what model of receiver you use and which operator satellite television connected. The message will be approximately the same and appears on the TV screen at the most inopportune moment.

In the situation that has arisen, it is very important to understand who exactly gives out the message about the absence of a signal - the TV or the satellite receiver itself. These are two big differences. In the event that there is no signal from the satellite receiver, then the message about the absence of a signal is issued by the TV itself. When there is no signal from satellite dish- a message about the absence of a signal is issued by a satellite receiver.

If we see a message about the absence of a signal displayed by the TV itself, then we need to deal with connecting the video cable from the receiver to the TV. It is possible that the connecting cable was damaged, simply moved away from the video output of the receiver or from the video input of the TV. If there is one more explanation - the wrong video input is set on the TV itself. The fact is that a modern TV is equipped with almost a dozen different video inputs. And you need to make sure that the video input to which the video cable from the satellite receiver is connected is set as active in the TV menu. The choice of the correct video input in the menu of the satellite receiver is carried out using the "INPUT" button on the TV remote control. Another such button can be called SOURCE. Or be not signed at all, but simply marked with an icon - see the instructions on the TV.

The question may arise - “how to understand who displays a message about the absence of a signal on the TV screen - the receiver or the TV itself?” It's very easy to understand. You need to pick up the remote from the receiver and call any element of its menu - a list of channels, a settings window, or something else. If the corresponding window of the receiver's graphical menu appears on the screen, then the video signal from the receiver is coming to the TV and there is no problem in the video signal transmission in the receiver-TV connection. So the message about the signal belongs to the receiver and there is no signal from the satellite dish.

If, with the receiver turned on, you try to call up the receiver's menu, but do not see it, then this clearly indicates a problem in connecting the TV to the receiver.

In the event that the receiver’s menu appears on the TV screen properly, we conclude that the message “NO SIGNAL” belongs to the satellite receiver and this message means that the receiver does not receive a signal via the drop cable ( antenna cable) from the satellite dish.

No signal from antenna - how to fix

The receiver may not receive a signal from the satellite dish for a variety of reasons. Let's consider them in more detail:

1. The receiver itself is incorrectly configured to interact with the satellite dish. The solution is to check the receiver settings, make sure they are correct.

2. Damaged drop cable from antenna to satellite receiver. The solution is to find the damage and fix it. Or replace the damaged cable entirely.

3. The satellite antenna converter is out of order. The solution is to replace the satellite converter.

4. The antenna is mechanically damaged and unsuitable for signal reception. The solution is to replace the satellite dish

5. The antenna has lost its direction to the satellite. The solution is to adjust the antenna for good signal reception from the satellite

This is what the message about the signal looks like when it is not from the satellite dish


There are other reasons for the lack of signal from the antenna

6. Solar interference. It doesn't last long. The solution is to wait for the end of the interference

7. Prevention in the satellite-teleport system. The solution is to wait until the end of the prophylaxis. Call the call center of your satellite TV operator and find out if prevention really takes place. Or go to the operator website.

No signal from the receiver - how to fix it?

1. Make sure the correct video input is selected on the TV. If not, select the correct one with the TV remote control

2. Make sure that the required video output is enabled on the satellite receiver. For example, on the GS 8306 receiver, only one of the two vibe outputs can work at a time.

3. Try replacing the video cable. Often a short HDMI cable from a tricolor kit fails

4. Try to connect the receiver and TV with a cable with other connectors. For example. an HDMI cable was used for \ connection, you can use a SCART-SCART or SCART-tulip cable instead. Or any other cable that fits the receiver output and TV input.

Connecting the receiver to the TV is not particularly difficult; there is at least a little understanding of the operation of video equipment.

The specialists of our service carry out the whole set of works necessary to ensure that the signal from the antenna reappears on the receiver and you can watch your favorite TV channels.

Departure of a service specialist to set up the equipment is possible in Krasnodar and the suburbs.

This is what the message about the signal looks like when it is not on the TV from the satellite receiver


Message "NO SIGNAL". The message belongs to the TV

Why is digital TV not showing? This question interests many users who are already accustomed to high-quality image and sound. Thanks to the T2 tuner, even analog models have clarity and contrast, color depth. Consider what to do if the channels are gone - all or partially.

Channel search

In some cases, you can do without the help of a wizard and set up the TV yourself. This can be done in two ways - manually and automatically.

Manual digital TV tuning

Before performing this task, you need to define some data:

  • Channel speed;
  • broadcast frequency;
  • TV resource modulation.

Then, using the remote control, we perform the settings:

  1. Let's go to the "Menu".
  2. Select manual setting.
  3. In the field, enter the data from the provider and save them.
  4. We start the search.

The procedure is repeated several times.

Automatic setting

To do this, use the remote control. The operation is performed as follows:

  1. We go to the "Menu" section.
  2. We find the "Settings" section.
  3. Select "Auto Adjust".
  4. Click "Search" and wait for it to finish.

As a result, digital channels with excellent picture quality should be detected.If not all channels are displayed, you must use the manual search.

Why is there no digital TV and how to fix it?

Often, when trying to set up a modern TV, which has a lot of built-in functions, users may experience problems. Most often, “cubes” appear on the screen due to:

  • Incorrectly selected type of antenna;
  • Incorrectly installed antenna.

If it was not possible to cope with the problems using the instructions, we try to perform the following steps:

  1. To set the maximum number of channels, enter the symbol “_” in the field where the country is indicated.
  2. Add frequencies manually.
  3. Update software.
  4. Reset the settings to factory settings and restart the search.
  5. Perform a firmware update.
  6. To eliminate problems in the antenna, you should connect the receiver to check on another TV.

When all the actions performed did not lead to the appearance of a signal, you should check the cable at the connection points.

To play digital channels, the antenna must be installed correctly. In addition, it must have special parameters in order to receive signals from stations that broadcast digital TV channels.

Important! If you are using an older TV, you will need to connect a receiver to it. In the new technology, the decoder is already built in.

How to choose an antenna?

Choosing the right antenna is not so easy, because they are represented by a variety of types and configurations. The main difference between all types of antennas is in the place of their installation and the type of signal amplification.

indoor antennas

They can be installed on any flat indoor surface. But most often they can be used within the city, close to the television tower.Signal strength may be reduced due to walls and external obstructions.

Outdoor antennas

They can be installed in a city apartment, and in country house. It is installed quite simply, and the signal quality is much higher.

Types of antennas

It is also important to choose the right kind of antenna. They may be:

  • Passive.Designed to receive and amplify the signal. There are no components for additional reinforcement in the design. positive quality is the absence of noise in the signal.
  • Active.In order to accept digital signal of normal quality, they use not only the design of the antenna, but also the amplifier. It is built into the antenna or taken out. It is powered by a regular socket.
  • directional active. The design is similar to conventional active antennas. The main difference is the overall dimensions and additional elements.

Important! When choosing an antenna, be sure to take into account the distance between the receiver and the signal source.

How to amplify the signal?

Modern equipment has advanced capabilities, but sometimes the signal itself is of poor quality. There are some effective ways to help troubleshoot this issue.

Often, in order to improve the image quality, a special device is used - an amplifier.

In some cases, you can use more affordable methods that do not require additional costs:

  • Change the location of the antenna.It should be directed towards the tower that transmits the television signal.
  • Check cable. It should not be damaged or twisted.

Choosing an antenna amplifier

For right choice antenna amplifier requires the selection of some parameters:

  • Distances to the signal source;
  • frequency range;
  • The signal level at the output of the device - the optimal indicator will be 100 dB per microvolt;
  • Gain of the device - the indicator must be at least 40 dB;
  • Noise figure - this parameter should not be more than 3 dB;
  • The type of device that requires TV signal amplification;
  • Consumption current;
  • Locations.

Important! To watch digital television, you should choose a device whose supply voltage is 5V. When choosing a digital set-top box with the same parameter, you do not have to purchase an additional power supply for the antenna amplifier.

It must be understood that the signal may be absent due to work on the repeater or equipment failure. Usually such information can be found on the websites of providers.

A visual guide to setting up digital TV using the remote control different ways see the suggested video.