Due to the planned disconnection of apartments from analogue TV broadcasting, the majority of the population is switching to digital television, because it is characterized not only by high-quality images, but also by uninterrupted broadcasting. However, despite the obvious advantages of the technology, problems are possible here as well. Most often they consist in the fact that the channels stop working digital television... Let's see why digital television does not show today.
No signal what to do
Before proceeding to fix the problem, it is worth identifying what exactly it is. The reasons are divided into the following types:
- stopping the signal from the multiplex;
- repair work;
- weather;
- equipment malfunction.
If there is no digital TV signal, make sure no maintenance work is in progress. You will need to go to the broadcaster's website and familiarize yourself with the schedule of maintenance and repair work. And if the problem lies in the installed equipment, you will need to determine at what level they are not caught digital channels- on software or hardware. There may have been a settings failure on the TV and as a result, it stopped showing. Why the channels have disappeared and what to do with the cause that has arisen, we will consider further.
Hardware malfunction
In case of intermittent sound or poor picture quality, the problem is clearly a hardware malfunction. In the event of a breakdown, there may be a complete lack of display of digital channels. Defective can be:
- antenna;
- prefix;
- cable and all connections to it.
Let's consider each item in more detail.
Antenna malfunction
A common reason for the lack of broadcasting is the direction of the antenna towards the transmitting tower.
IMPORTANT! Make sure the position of the antenna matches the direction of signal reception.
An antenna on the street is most susceptible to damage. From frequent ingress of moisture, strong winds, elements can be damaged and there is no digital TV signal. Follow these steps to identify the problem:
- Check the presence of voltage in the power supply.
- View cable connections to devices, plug.
If the viewed equipment does not help to identify the cause, connect another antenna and test. If the new antenna does not work, then the reason is different.
Faulty cable and connections
A common problem is a cable fault. Since part of the cable is located on the street - during long-term operation, the winding is destroyed and erased, and this leads to cracks. It is important to review all cable connections for integrity. If damage is found, the cable will need to be replaced.
Prefix malfunction
It is quite simple to determine the breakdown of the set-top box - when turned on, a special LED is dimly lit or not at all. If pressing the buttons on the remote control remote control no action is taken, then the problem is clearly in the prefix. Replace the set-top box with another one and check the operation of the digital TV.
IMPORTANT! Sometimes situations arise that the television does not work due to the obsolescence of the set-top box. If the equipment is outdated, then it is required to replace it with a new one.
Poor receiver firmware
The lack of a signal can be explained by poor quality firmware of the receiver itself. To fix this problem, it is enough to reflash the equipment again, or replace it with a new one. To install a new firmware version, you need to download new version for a specific model on the manufacturer's official website, and then update on the device. For correct flashing, it is best to contact a specialist.
Spontaneous factory reset
There are situations when just yesterday the TV was displaying digital broadcasting, and today it says “No signal”. It is possible that the device has spontaneously reset to factory settings and all settings have been erased. You will need to go to the device menu, check the correct signal reception, and then start the channel search again.
Poor signal reception conditions
A common problem of having bad signal or its absence may be due to improper antenna placement. It must be correctly installed and directed in the direction where the tower stands. One of the reasons for poor signal reception can be bad weather conditions, as well as maintenance and repair work. It is also possible to break off the contact at the cable connections and connections. In this case, check all plugs.
Stop broadcasting
notification on the rtrs website: short-term outages of the TV and radio signal in the Moscow region Possible problem the termination of the broadcast advocates the implementation of preventive work. For clarification, you should go to the broadcasting site of your region and view the information. For test work the second multiplex is disconnected and collected necessary information... Broadcasting stops completely soon after. Today, in most regions, broadcasting is carried out using only one multiplex package. After disconnecting analog television, the ability to connect the second package will increase. If such preventive work is carried out, the TV and radio channels are temporarily switched off.
Renovation work
Emergency situations requiring repair work (during which broadcasting is interrupted) are a frequent case of signal absence. This is a temporary reason during which there is no signal at all. After the equipment is repaired, the broadcasting tower will provide a digital TV signal in a normal mode.
Weather
Bad weather can be another reason for a weak digital TV signal. Strong gusts of wind, thunderstorms, rain and snow can affect signal reception. In this case, there may be a deterioration in the quality of the image and sound, and the picture may be displayed in the form of "squares / pixels". The complete absence of a signal is also possible. In this case, check the signal level on your equipment. If the indicator is low, you should increase it to the maximum. It turns out that weather conditions will not be able to affect the loss of digital channels, but only to some deterioration of the signal.
Conclusion
This article discusses the main reasons why digital TV does not work. The problem could be with your equipment itself or with your broadcast tower. So that the device does not fail, it is necessary to check all the elements for serviceability at regular intervals.
In some cases, it may be necessary to replace the antenna, cable, plugs or the set-top box itself. Don't forget about updating the receiver's firmware. If the version becomes outdated, the signal reception sensitivity may decrease. Timely update software will help prevent loss of digital signal. This can be done both independently and with the help of wizards.
There are still those who watch TV. And all this is contrary to common sense, since films are shown on TV at a decent age, and local TV shows and series can be downloaded on the network a maximum of a day after their release. This article explains why it doesn't show the TV. 100% - this is the chance that you will find a solution by reading this article.
The main reasons why the TV began to show poorly
It is possible that this is an old habit of sitting on the couch, which certainly does not want to sink into the past. Still an unexpected appearance blue screen can be quite a nuisance for TV lovers until they figure out why they are not showing TV.
And the reason for this may be a number of factors.
- Bad weather or lack of a wave of the required frequency (relevant if you have analog or satellite TV and use an antenna).
- Technical obsolescence of technology.
- Lack of required settings or unsupported technologies.
Technical work on a TV channel or at a provider
All TV channels work around the clock, and the answer to the question why the TV is not shown may be to carry out both planned and unscheduled technical work. This and backups, and hardware firmware, and much more. You can check the fact of technical work by switching to other TV channels. If everything is fine there, then you just have to wait.
Providers work in a similar way, and they also need preventive work.
It is also possible that the local provider intervened, which, for various reasons, could remove this TV channel from the list of its services without notice. In such cases, it is worth asking neighbors connected to other providers about the presence of problems and finally figuring out why the TV does not show channels.
Antenna or signal reception problems
Antenna in a sphere home television gradually becomes the past. More and more states are switching to digital or cable TV... These technologies do not use outdated technology for transmitting waves of the desired frequency over a distance and eliminate the need for "dancing with the antenna" in order to better catch the signal - all data is transmitted over wires from minimal loss picture quality! An example is Ukraine, which has completely abandoned analog television since September 2018.
A weak signal is the reason why And this is at least a terrible picture quality, as well as a limited number of channels. Whether it makes sense to replace the antenna with a more powerful one and with a small chance to increase both mentioned factors depends on the specific case.
For example, it is unlikely that it will be possible to find a provider outside the city who will extend a cable of many kilometers into the village because of several subscribers. For him, it is unprofitable, and the payback will stretch for tens of years. The only way out in this case is more powerful antenna or switching to satellite TV services.
Antennas called dishes are widely used in satellite TV technology. In this case, the weak receiver problem inherent in analog antennas, can be completely excluded. The reason why the TV does not show satellite channels may be a malfunction of the antenna itself.
Recent winds, hurricanes, snow and other natural phenomena can also cause failures, which can damage the receiver, bend, unfold, tear off the antenna parts, and also fall asleep in snow, muffling the receiver power. In this case, it is necessary to inspect the device for cracks, traces of mechanical stress, make sure that the antenna has not changed its tilt.
If visually everything is in order, there is no rain or fog outside the window, and it is not possible to find out why the TV is not showing, then it is time to contact subscriber support.
Technical malfunction
The last and rarest factor may be a breakdown of the TV. If the picture is poor on all channels, the neighbors are fine, and technical support cannot help, most likely the TV is out of order.
Sometimes the problem goes deeper. If you have digital television connected, then some older TV models may not support the modern format, the same can be said about equipment that is not intended for the Russian market.
In this case, unfortunately, it is necessary to replace the TV with a newer one for domestic broadcasting.
Solving the problem yourself
If the device cannot be configured or it does not show all channels, you should pay attention to the condition of the antenna... This defect is most often encountered when connecting new television devices. The cable may break or be pinched by furniture. An external examination often reveals a problem.
If the antenna is in good condition, you should inspect the plug and the quality of the antenna connection... It should be free of oxidation and other defects.
If there are no problems, contact your neighbors after a visual inspection. If everything is fine with them, then the next step is inspection of the receiver or tuner if available. In case of its malfunction, the TV does not find digital channels while analogue channels are operating normally.
If these manipulations did not help, and the TV does not see the channels as before, you need to seek help from professionals who will thoroughly diagnose the device and repair it at home with a warranty.
We strongly recommend that you do not try to repair it yourself, as this often leads to additional failures, which will subsequently require higher financial costs. That is why, before starting repair work, assess your capabilities.
Repair and adjustment of TV by specialists of the "TVF" workshop
Experienced engineers will carry out home repairs in Moscow with high quality and within the agreed time frame, after which the problem will be solved. Modern professional equipment allows you to correctly diagnose and repair any type of malfunction.
No family can be imagined without a TV. It is needed for watching news, movies, entertainment programs, or as a background for everyday activities. But sometimes problems can arise with it. This can bring enormous inconvenience and chaos in the usual course of time. Many are faced with the fact that a completely new TV does not show anything at all.
In this case, you just need to configure it correctly. And sometimes some channels of an old device start to disappear. And in general it's terrible when the most beloved ones disappear. It could be a breakdown or a glitch that you can fix at home yourself. If you are also having problems with your TV, do not be discouraged, but read on for tips on how to fix it.
Digital TV works on the principle of transmitting images and sounds through compressed coded signals. Exactly the same technology is used to transmit a signal to a computer. This allows you to get better picture and sound quality, no interference can affect it. In addition, more channels can be transmitted in this way, and users are able to access the Internet directly from the TV.
Methods for receiving digital TV channels
There are several ways to catch a figure:
Essential;
Cable;
Satellite.
The signal for terrestrial TV is distributed using terrestrial repeater towers. In order to receive it, you need an antenna. Using this technology, the image is transmitted free of charge. But with this method, the TV often does not pick up the signal well. Since the quality of the picture is influenced by where the tower is, what the weather is outside, and many other factors.
Apartment buildings are most often used by cable TV. In this case, the signal is transmitted through a cable that is connected to a common antenna. However, it must be paid for and cannot be used in private homes. Satellite signal transmission is carried out by satellites, and it is received by a special dish. This method allows you to receive the largest number of channels. But you have to pay for it and buy additional special equipment.
Of all these methods of receiving numbers, on-air is the cheapest and most widely available. But the picture quality is poor.
Algorithm for tuning digital channels
Regardless of whether your TV is old or new, the frequency setting is the same. First you need to get an appropriate antenna that can receive a signal. Then we connect the set-top box for digital television and set up:
In the settings, open the item " Broadcast»;
Select auto-tuning;
Click " Start»;
The TV will ask you to select a signal source - antenna or cable. Choose the one that you have;
Then run a search.
If the device still does not show any picture, use alternative methods of connecting digital television using a cable or satellite box. In the first case, you need to insert a cable from the cable TV into the antenna connector. Then, during the settings, you need to choose not the cable, but " Other operators". You need to search for both analog and digital channels. Then you can sort and arrange them in the desired order.
In the case of a satellite box, two cables are connected. The first is connected to the antenna. Then they connect the equipment to the network and start looking for channels. When a notification of no signal appears, the search will end. After that, the set-top box is connected to the TV with another cable, and a picture appears. In the sections “ Quality" and " Force»You can adjust the picture.
Features of setting up TV sets of some brands
The TV setup process may differ depending on the manufacturer. Although these differences are not very significant. In addition, as a rule, all devices have prompts that make it easy to guess how to search for channels. However, older models can only be configured manually. Below we will talk about the intricacies of this process on different TVs.
Samsung
If you have a TV company Samsung, go to the menu, in the item " Channel»Choose a cable. In point " Country»Enter four zeros and set the country. In chapter " Cable parameters"Set:" Start frequency"- 298,000 KHz," End frequency"- 362,000 KHz. Do not touch the rest. In autotuning, select a digital or analogue. In the search mode, press the network and wait until the picture appears. They can be removed from the list. To do this, in the paragraph " Channels"You need to go to" Dispatcher»And choose which ones to delete.
Lg
If you own an lg TV, go to the menu or press the " Home"(For smart TV). In the options, select the country, then in the settings, click “ Autosearch". In the window that opens, select the type of signal. And then set the data of the start frequency to 274,000 KHz, and the end frequency to 770,000 KHz. Then run a search. In the cable settings, you can set auto-update, which will be carried out regularly without your participation.
Sony bravia
Owners of these devices need to " Parameters" go to " Settings" or " System parameters". In point " Channel setup»Select a number. Then enter the values in the parameters, which it is better to clarify with the operator.
Toshiba
Toshibu set up in the same way as previous models. In the country settings, select Germany, and the input is “ Cable". Next, go down to automatic configuration and click OK. In the pop-up window, select the " DTV”, And then set the parameters: for the start frequency - 274,000 KHz, for the end frequency - 770,000 KHz. Confirm your selection and setup will begin.
Philips
In older models, the setting is as follows: press " Home"And choose" Configuration". Then go to " Installations»And select the channel setting. In the window that appears, select " Automatic installations ". In order for everything found to be preserved, you must click " Reinstallation". Choose a country.
It is better to install European countries, otherwise you will have to contact specialists to install new software.
Then go to " Digital mode»And select the cable as the signal source. In the new window, click " Automatic search". Then click " Start"And wait. Sometimes during the process, the device may ask for a password. Try entering four zeros, four ones, or 1234.
On modern models, the setup process is slightly different. In point " Installation»Select« Channel search", then " Reinstallation". Specify the country and digitally select " DVB-C cable". Next, the device will ask you to enter the network frequency or baud rate. Enter 6.750. And then select “ Quick" or " Full" Search. In the first case, you will have to wait no more than 10 minutes, and in the second - about 30 minutes, but it will find more channels. With a quick search, you will need to enter the value of the frequency drop - 8 MHz. At full, set the QAM to 256 and the frequency to 298.00.
Reasons for the absence of digital TV channels and their elimination
If, after autosearch, the TV does not catch channels, then the device has problems. Malfunctions can be in the signal reception, in the connection method, in the settings or in the equipment itself. In order to eliminate the cause, you need to find the problem. How to do this and fix everything, read below.
Customization
Software problems can be easily dealt with. First, try changing your country to " Other". If this does not help, perform a manual channel search, reset the TV or receiver to factory settings and search again or update the set-top box firmware. If after that the TV still does not find channels, then look for the problem further.
Antenna
Antenna problems are the most common reason why TVs won't pick up digital channels.
Do not use an indoor antenna for digital reception. Otherwise, the picture will constantly disappear or be completely bad.
Try pointing the antenna towards the tower. Make sure nothing is interfering with the signal - no trees, buildings, etc. If there are obstacles, lift the device higher.
Cable
If the above did not help cable TV owners and the TV channels only show analog, check if everything is in order with the cable. Inspect it for damage, if everything is in order with the plugs and connections. First of all, you need to check the cable if everything was fine before, and then the TV stopped showing channels. If you only have 10 digital channels, then the reason most likely lies in technical works and the peculiarities of the functioning of digital television. Sometimes you just have to wait and everything will come back, and sometimes you just need to search for channels again.
Connection methods
Sometimes the problem that the TV did not find the right channels is the wrong way to connect to the digital. Therefore, before starting to configure or reconfigure them, make sure that all equipment is correctly connected. If you have a decimeter antenna, it, together with an amplifier, must be connected to a signal receiver that connects to the TV. If you have a cable, then it should simply be plugged into a special jack on the receiver. Check if everything is the same with you and if everything is in its place. If not, fix it.
Search setting
The problem of not finding a single channel may lie in wrong settings searches. Try to search again according to the above schemes, carefully specifying the type of connection and other parameters.
If the problem still persists, contact a specialist. They will help you get your device up and running.
Note.
The digital format of television assumes a better picture and sound, but in fact, users often face a number of problems, one of which is signal interruption. Why are digital channels disappearing, and what to do in this case, read on.
The principle of receiving digital TV channels
Despite the fact that digital television has existed recently, it is gaining more and more popularity, as the user receives high quality image and sound. Also, the pluses include the fact that it is possible to connect additional programs, functions and use interactive TV.
The principle of operation of the technology is simple - the encoded audio and video signal enters the TV through antennas via a special stream, and is decoded on the TV itself, and the user receives a high-quality image.
Reception of digital broadcasting is carried out in several ways:
- ethereal- the picture is received through the towers of the repeaters;
- satellite- you can watch a large number of channels, but you need a special dish;
- cable- used in apartment buildings, the signal is transmitted through a collective antenna.
Reasons why digital channels are missing
There are situations when channels suddenly or after turning on the TV disappear - one, several or all at once. There are a number of reasons why this situation is possible.
All channels
Why are all digital channels disappearing:
- The signal coming from the TV tower is bad for the selected equipment, due to which the TV does not receive reception.
- Antenna selected incorrectly. Choose an antenna based on the conditions of distance from the TV tower. If the distance is 3-7 km, you can leave the indoor one, otherwise get a powerful outdoor antenna with a good amplifier.
- Connecting a digital set-top box to a digital TV. Together, these equipment do not function adequately, they constantly reboot, and the settings get lost.
- The contacts on the amplifier are oxidized. It concerns more outdoor antennas, especially if their service life is long enough. The amplifiers of some antennas are simple plastic boxes that allow water to enter and cause oxidation. Such situations should be avoided.
- The base frequency of the signal reception is incorrectly selected. The essence of the process is to find the closest broadcast transmitter to your home, which allows you to receive a stronger signal. Therefore, make sure that the signal receiving frequency is most suitable for your area.
- Presence of interference from GSM and LTE. There are more phone towers than television towers now, so they can obstruct the signal. You can fix this by purchasing a special filter that protects against GSM and LTE signals. It connects as an intermediary between the antenna connector and the TV.
- No DVB-2 support. If your TV or set-top box does not support this standard, then the second multiplex of channels will not be shown - you will not find them.
- Often the problems are related to weather conditions. In strong winds or thunderstorms, the signal is severely degraded, which leads to the loss of channels. Usually, after normalization of weather conditions, everything returns to normal.
- The receiving point is located at the bottom and the signal flies over the antenna. This situation can be corrected by removing the antenna to the roof of the house or fixing it to a separate mast.
Multiple channels
Let's consider the most common cases in which the prefix catches and shows only a part of the channels:
- DRE channel coding appears on the TV screen. This happens if the set-top box has been turned off for a long time - the device needs a couple of hours to work in normal mode for synchronization to occur, after which all channels are restored.
- A message about the presence of a paid channel appeared on the screen. If you really have paid channels, extend the work by paying. If such a notification appears on free channels, contact your provider.
- The software is not compatible with the GS-HD receiver. You can fix this by going to the menu and activating the key to restore the channel list.
- Lack of registration of the receiver. The back of the device has an identification number... Using a computer, go to the Tricolor TV website (https://www.tricolor.tv/), then enter the data received from the provider to register.
What to do if channels are missing?
If digital channels are missing, you can try to tune them manually or use automatic tuning... Study the general algorithm of actions, because regardless of which model you have a TV, the principle of setting is similar. The main thing is to carefully read what is written on the screen.
Auto tuning
Standard algorithm of actions for autotuning:
After setting in automatic mode you will have about 20 channels in high definition... If only 10 out of 20 are found, use the manual search.
Manual setting
Setting in manual mode consists of the following points:
- Go to the main menu.
- Find the sub-item “ Manual setting”.
- Enter the data from the provider in the field that appears.
- Start your search.
- After each found channel, click the "Next" button.
It happens that you need to make changes to the digital series in order to improve the image quality. Manual tuning takes longer than automatic tuning, but you will be able to fine tune each channel.
Features of channel settings depending on the TV model
Each TV model has its own factory firmware and individual functionality. Let's take a look at how to set up channels for some models.
Samsung
To tune digital channels for most Samsung models, follow these steps:
- Press the "Menu" button on the remote, after which you will open the TV menu.
- Select the "Channel" - "Country" section in the menu.
- The TV will ask you for a PIN. If you have never used it before, then enter 0000. To have the necessary search parameters, make sure that in the line "Country" you have specified "Other".
- Set in the menu "Channel" - "Antenna" the parameter "Cable".
- Open the "Cable Search Options" menu and set:
- Open "Auto Tuning". Signal source - "Cable", type of channels - "Digital".
- Select the channel type at your discretion - either only "Digital" or "Digital + analog".
- Set the search mode to "Network".
- Click the Search button.
After automatic search you will find all the digital channels existing on the cable network, but you can only watch those that are included in your package.
Below is a video tutorial on how to set up digital channels on a Samsung TV:
Lg
LG TVs are set up as follows:
- press the "Menu" button on the remote control;
- select "Options" and click on the necessary parameters for changes (for example, in the "Country" section, select Finland or Germany);
- go to the "Settings" item and select autosearch, specify the cable connection;
- fill in the window that appears according to your instructions.
You can use automatic update TV channels, LG has this function. As a result, the previous list will be cleared, and the channels will be tuned in a new sequence.
Philips
Consider the settings for a Philips TV:
The program configures the channels on its own. After completion, you do not need to do anything else.
There are many reasons why digital channels stop broadcasting, but almost all of them can be solved independently. The main thing is to decide what exactly went wrong. There are also no problems with the subsequent adjustment, since all the settings are similar, and necessary information you can get it either from your provider or in the instructions for the TV.
