Common causes of no signal
In most cases, the reasons that the TV says “no signal” are as follows:
- the equipment itself has broken;
- preventive work is in progress;
- external factors affect: high or low temperatures, precipitation, dust, etc.
It is quite easy to solve these problems, but it is undesirable to try to fix the damage that has arisen on your own. The best way out is to contact specialists.
Typically, service providers inform their customers of upcoming planned repairs. But sometimes the breakdown occurs suddenly and it is impossible to warn users. You can easily determine if the work is actually in progress, because of which the screen displays the message “Check connection” or “No signal”. It is necessary to press the Menu button on the remote control of the receiver. If the reason is in the provider, then the corresponding information message will appear in the main menu. This verification method is only suitable for satellite TV users.
Unfortunately, nothing can be done about this, you will have to wait until the technical work is over. Usually providers try not to stretch them and finish within a day.
If there is a suspicion that it is not technical work that is to blame, but a cable break outside the apartment, you should call technical support and leave a request for the master’s departure. Companies such as Rostelecom and MTS try to solve the problem within 24 hours.
Breakdown of equipment
If there is no signal on the TV, before diagnostics, you must definitely tell the wizard what type of connection is used. Depending on the equipment used, there may be the following reasons for the appearance of the “No signal” message:
- breaks in the connecting cable;
- broken antenna or satellite dish;
- out of order satellite converter.
Sometimes it is possible to determine that a break has appeared on the cable by visual inspection. But in most cases, special diagnostic tools are required. The wire can break off at any length or near the plug. If a poor quality cable is installed, the picture and digital TV signal quality may deteriorate over time. The best way out of the situation is to replace the wire with a new and expensive one. If the problem was in it, signal reception will be restored.
A fairly common reason for poor connectivity among users of antennas and satellite dishes is equipment breakdown. This can happen, for example, when a lot of snow falls in winter or early spring. The specialist will determine the complexity of the breakdown and the possibility of repair, after which he will replace the failed parts or the entire device.
Sometimes the signal from a satellite dish stops going due to the fact that it is installed incorrectly. Proper positioning of the dish is important for perfect signal reception. You need to find out the angle calculator on the provider’s website (for example, Tricolor), then indicate the coordinates of the satellite and your current location. After that, the antenna is aimed in the desired direction, based on the received data. You can improve the signal quality with an antenna amplifier.
Often the problem lies in the malfunction of the satellite converter. This device is mounted on a dish and is used to lower the frequency of the signal transmitted by the satellite. There is usually no point in repairing the converter; it is completely replaced with a new one. The process of installing the device is rather complicated, so it should be entrusted to the master.
No signal on TV. what to do?
In each city, providers offer users hundreds of channels for every taste. Usually there are no problems with the connection, all programs work as they should. But sometimes the TV starts working incorrectly and stops catching TV channels. What to do if you don’t want to miss your favorite show?
Before calling the wizard, you can independently check the technique and approximately determine the cause of the problem. To do this, step by step it is necessary:
- See if the receiver is turned on and is receiving a signal from the antenna. If yes, then the corresponding indicators will light up on the set-top box.
- Turn on the TV and check which mode is currently connected. You can switch modes using the “Source” button, you need to select AV.
- Inspect the places where the wires are connected, if necessary push the plug more tightly into the socket.
- Check for damage on the wires going from the antenna to the TV.
In some cases, the reason why there is no signal on the TV may be too low voltage. So that it does not fall below 220V, it is worth purchasing a stabilizer. Most modern models of plasma and LCD TVs, for example from LG and Samsung, come with sturdy sockets. But in rare cases, they can become loose and poorly grip the plug. The problem is solved by ordinary replacement.
An antenna is a device that needs periodic maintenance. If the owner noticed that street dust or ice has accumulated on the device, it is necessary to thoroughly clean the surface from dirt. When large masses of snow and ice fall in the spring, the antenna may move slightly and stop picking up the signal normally. In this case, you need to constantly correct it according to the data on the optimal coordinates, which can be obtained from the provider. Heavy rain or hail can also move or damage the plate.
Branches or any other foreign objects located directly in front of the antenna often interfere with the signal. If possible, you need to try to remove them, and cut the branches. If it is impossible to get rid of obstacles, you will have to move the plate to another, more convenient place.
The antenna bowl should be inspected periodically to check for foreign objects. They interfere with normal signal reception and may cause ripples on the TV screen. This is especially true for metal objects. Sometimes a thorough cleaning of the bowl helps to establish the reception of TV channels.
The company “Polite Service 5” offers to call a TV repairman in case of breakdowns of any complexity. Highly qualified specialists will help you get your favorite channels back, restore lost settings and replace burned-out boards or other parts. If the TV has a blue screen, ripples or the inscription “No signal”, you need to call 8 (495) 707-05-05. You can also fill out a special form on the website and we will call you back immediately! Our masters work every day from 7:00 to 23:00 without holidays and weekends, so they will be able to come to each client at any convenient time.
If the receiver detects insufficient signal strength, a more complex problem is observed.
The reasons for the lack of signal can be grouped into two categories:
- Problems due to external factors
- On the side of the satellite dish
In the latter case, you can independently find out why the antenna does not show.
To find out exactly that the problem has arisen on the spot, it is enough to connect the cable coming from the head directly to the TV. If some of the channels (which are broadcast in their usual form, ATV) are working, the Tricolor antenna is fully operational, otherwise you need to look for the source of the malfunction on the spot.
The first step is to see what signal level is observed on the receiver.
If a value is recorded in the range of 15%. 25%, the cable is faulty. Such numbers are typical when you turn on the TV with a nearby receiver that is not connected by cable. It must be replaced with an analogue with a resistance of at least 65 ohms.
If it is found that the value of the recorded signal is more than 30%, but insufficient, the signal does not reach the antenna at the proper level.
There are two possible reasons:
- The plate has deviated.
With strong winds or weak fasteners, over time, it could be displaced from its original position. It is necessary to return its position by smoothly moving until a sufficient signal is found.
- There are obstacles.
Most antennas include a horizontally polarized Sirius converter. Perhaps the antenna was installed too low and now an obstacle has appeared in the path of the electromagnetic wave (for example, a multi-storey building is being built). You need to raise it a little, keeping the current direction.
If there is such a situation that the receiver shows 0%, this indicates a malfunction of the satellite, or the set-top box itself.
In the first case, regular work with the equipment can occur, about which you can obtain information from the Tricolor provider.
Types of malfunctions
Why there is no signal from the Tricolor satellite dish. there can be many reasons.
It is more correct to combine all of them into two categories:
- Lack of display.
There are no images of several channels or all programs at once on the screen, while the radiation level is satisfactory. In this case, the cause of the malfunction is only on the user’s side, or rather in his equipment.
- No signal.
This problem can be related both to the operability of the equipment and to external factors on the side of the operator or satellite.
In most cases, especially with faulty equipment, there is no fundamental difference between operators.
If the Tricolor satellite dish stopped working unexpectedly, and the channel switching does not give results, there was a failure in the broadcast or the equipment is out of order.
The first step is to look at the level of the recorded signal (yellow bar).
If it is at the same level and exceeds 65%, broadcasting is in normal mode and all equipment up to the receiver is working properly.
The problem is greatly simplified and only three devices need to be checked.
- TV set.
You need to make sure that the physical channel is turned on, corresponding to the connector to which the television is connected (usually HDMI or DVB-S2). If everything is correct, you should connect the terrestrial antenna to it. If the show starts, the TV is working properly.
If only a few programs are not shown, you need to deal with their broadcasting. To do this, just call the hotline of the Tricolor operator. Probably, one of the paid packages has not been paid for or technical work is underway on the side of the broadcaster.
In case of complete absence of channels, it is necessary to re-set the settings for the converter and scan the programs. If this does not help, it is recommended to call the Tricolor provider about changing the operating frequency for the satellite, because in rare cases, this practice is appropriate.
If you find that only a few channels are missing, you need to make sure that the paid package under the agreement with Tricolor has been extended. They may have been turned off for non-payment.
- AV wire.
If the options listed above did not help, the only option is the faulty wire through which the image or sound is output. You can verify this by connecting the antenna cable from the converter directly to the TV, and ATV programs will start showing. You need to change it to an analogue (new RCA or HDMI wire).
Principle of operation
It works on a similar principle to terrestrial TV. the signal from the broadcaster is transmitted to the user through a repeater (satellite). From the receiving device (converter), radiation is transported through the cable to the receiver or output device. Having traveled all the way, the electromagnetic wave must maintain a certain level from the original, otherwise broadcast reception is impossible.
As a result, a complex chain is obtained and any interference can lead to the fact that Tricolor satellite television does not show. And before correcting the situation, you need to find out what caused the lack of work.
The main reasons for the lack of signal from the Tricolor satellite dish: we solve the problem
Tricolor TV is the most popular satellite TV today. The operator has tens of millions of subscribers who sometimes encounter problems with television. Lack of broadcasting is one of the common problems. This article will discuss why there is no signal from the satellite dish and how to fix the situation.
Most of the problems with the lack of operation of the Tricolor satellite dish are solved quickly and without complications. But in rare cases, a situation may arise in which it will not be possible to independently establish television.
If the methods described above did not help, it is not recommended to carry out other work with the equipment or settings and it is better to contact the specialists.
Why is there no signal on the TV and how to solve this problem
What if there is no signal on the TV? First, you need to diagnose the cause of the failure. You can do this yourself. Much will depend on the signal source: cable, digital or satellite TV. Secondly, you need to fix the problem on your own or contact the provider for help.
Partially this topic has already been touched upon earlier. What should I do if video signal problems occur after strong wind, rain, or snow? First of all, you need to establish the initial direction of the antenna or satellite dish. It cannot be ruled out that a bad picture is a consequence of the obstacles that have appeared: buildings, branches, trees. If possible, fix the problem, for example, cut the branch of a tree that is interfering with signal reception.
What to do in situations when there is no signal on TV due to the fact that there are obstacles that you have no right to remove? For example, neighbors have built a new building or expanded the house. The easiest way to solve the problem is to change the location of the TV antenna or satellite dish.
If the antenna / dish was initially installed correctly, but after the wind its direction changed, then this can also be considered the reason that when you turn on the TV you see the inscription “No signal”.
First of all, you need to adjust the turning angle of the dish or antenna. Pay attention to the direction of the antennas of your neighbors, do everything the same as theirs. To carry out the most fine tuning, use the angle calculator. You can find it on the official website of the provider. First enter the location details. To get the most accurate information, use the information obtained from the GPS of your smartphone. The program will automatically calculate in which direction you need to point the antenna to improve signal reception.
Sometimes the image quality can deteriorate noticeably during heavy rain or wind. This is a completely natural phenomenon. Bad weather will negatively affect the signal quality. Unfortunately, you are unlikely to be able to achieve perfect picture quality. You can try to move the antenna or dish to a more secure location if it matches the values obtained using the angle calculator.
Repair work at the operator
This reason is more related to those cases when the user is a subscriber of a satellite or cable TV provider. Where to call to find out why there is no signal on the TV today? Of course, you need to contact the Support provider, but first make sure that exactly those. work caused no signal.
You can find out about the time and duration of maintenance work on the official website of the provider. Also, such a temporary problem is defined as follows:
- Take your receiver remote.
- Open the settings menu.
- Check if there is a notification about no signal in the decoder menu.
If the channels do not turn on, and a notification about no signal appears in the receiver’s system menu. This means that the reason that TV does not work is the preventive work carried out by the provider.
If you are a cable TV subscriber, then problems with the signal quality may arise due to the fact that the set-top box itself is frozen. Reboot your device. Unplug the device from the mains for about half a minute, and then plug it back in. The crash may be gone.
To completely exclude the prophylaxis carried out by the TV operator, call the hotline. The managers will explain to you whether you correctly diagnosed the malfunction.
The technique is out of order
The most common reason that the TV does not show certain or all channels is the presence of hardware failures in the equipment. Breakdowns in this category can be roughly divided into three groups:
- mechanical damage to the connecting cable;
- breakdown of a satellite dish or TV antenna;
- receiver malfunction.
Now let’s look at all the problems in more detail. Let’s start with the cable problems. If the TV says “No signal” or it is very weak, which is why the channels are actually poorly shown, then most likely the connecting cable is damaged.
Diagnostics involves a thorough check of all plugs, as well as wires for breaks and other mechanical damage. Remember that the signal quality is directly affected by the cable. Therefore, it is very important to know how to choose the right cable.
Another justification for why there is no signal on the TV is a breakdown of a dish or a conventional TV antenna. If you are using a cymbal, first make sure that it points in the right direction. We will talk about this in more detail a little later. It is possible that the TV antenna is covered with a thick layer of dust and dirt. In the cold season, it can be covered with ice. Naturally, all this negatively affects the quality of the signal. Clean the surface of the device gently.
Damage to the antenna itself cannot be ruled out, for example, after a squall wind, a certain element of the device broke down. In this case, the TV antenna or satellite must be replaced.
No Signal on Tv. 5 easy steps to get back picture and audio. Please Subscribe
Sometimes the prefix writes “No signal” due to a receiver malfunction. This is a very common breakdown. The main task of the converter is regulation. The decoder lowers the frequency of the satellite signal. As a result, the loss of signal quality is automatically reduced to zero. The only way to solve the problem that has appeared is to change the faulty receiver.
If you do not know the basics of a satellite dish or a conventional TV antenna, then you should not try to fix the breakdown yourself. Entrust this difficult work to specialists. They will quickly restore the high quality of the signal. Lack of skills and professional equipment can worsen breakdowns.
The possibility of a malfunction of the TV itself cannot be ruled out. Even devices from brands such as Philips, LV, Sony, Samsung are not immune to breakdowns. The breakage may be minor. For example, the contacts of the connector for connecting the antenna cable have oxidized. Such a malfunction is eliminated by re-soldering the damaged areas.
Firmware update on Smart TV
If all the elements of the connection: TV, receiver, cable, antenna are working correctly, but there is still no signal, it is likely that the Smart TV firmware was the cause of the malfunction. Samsung regularly releases software updates for its technology. Each service pack is aimed at optimizing the TV performance and fixing errors. Therefore, in no case should you ignore the installation of a new firmware version.
To restore your TV to work, update the software. Mostly devices with Smart TV support are updated automatically, if not, then the firmware will have to be installed manually. This is not as difficult as it might seem at first. Just follow the step by step instructions:
- Connect the device to the Internet, for example, to your home Wi-Fi network.
- Press the “Menu” button on the remote control, and then open the panel with basic settings.
- Switch to the “Support” tab, and then go to the “Software update” subsection.
- The specifics of further actions will depend on which TV model you are using. You need the item “Online” or “Update now”. The commands may differ in name, but the principle of their operation always remains the same.
- The operating system automatically checks for updates, and then prompts you to install a new firmware version. You need to click on the “Yes” button.
- Wait for the moment when the installation of updates will be finally completed.
- At the end of the installation process, the TV will automatically reboot.
- Check if there is a signal. Re-tune all TV channels if necessary.
The firmware update on TVs from different manufacturers will be different. On the official website of the company that made the TV, you can find step-by-step instructions for installing updates manually.
Not all channels are showing
A weak signal is the reason that the TV shows only a part of the channels in poor quality. Why is this happening? First, as mentioned earlier, you might have ignored the system update output. Some packages are designed to restore signal quality in certain regions. Secondly, we cannot exclude the fact that you have set incorrect settings, as a result of which the signal constantly disappears.
It is very easy to solve the problem that has arisen. However, to a greater extent, this failure is characteristic of satellite TV. Open the settings menu and then select the desired satellite and frequency. Detailed information about specific channels can be obtained by hovering over the TV channel, and then clicking on the “OK” or “Info”.
Now you need to find a suitable port. Mostly a 4-port DiSEqC is required. Select the required port. Colored bars will appear on the screen. signal quality, save the set parameters. By analogy, we set up other satellites. Also, sometimes it is the tuner that constantly loses the signal. In this case, you need to reflash the decoder.
Now you know for sure what causes problems with the signal, as well as what is required to eliminate them.
The TV says that there is no signal. why is this happening and what to do with the problem
We will tell you what can trigger the “No signal” error on TVs.
If there is no signal, check the cable connection
Hardware check: antenna / dish, cables, set-top box
Your set-top box or TV could freeze (the set-top box is not used if the device supports Smart TV. these are modern TV models). Reboot the device: turn it off using the button on the remote control, disconnect the TV / set-top box from the power supply for at least 30 seconds. Plug the power cord back in and turn on the device. If the signal does not appear, check the equipment for damage.
Press the red power button to turn off the TV
- dish or antenna (depending on what is used);
- a cable that supplies a signal from an antenna / dish;
- set-top box (differently receiver, tuner) or TV.
Start by checking the cable: it should be intact along its entire length. See if there are any breaks, strong bends, cracks, etc. The plugs should be intact, the contacts on them should be free of oxidation. If there are problems with the cable, just change it.
If the cable is damaged, buy and connect a new one to the system
If you have the opportunity, inspect your antenna or dish. There should be no dust, dirt, ice on it. If the surface is dirty, clean it gently if you have access to it. If there is no access, call a specialist who can reach it using special equipment.
Due to snow, the plates may not pick up the signal from the tower
See if the dish / antenna is broken or defective. Some element may have broken. In this case, you will have to replace the antenna. If you are not sure that you yourself can determine externally whether the antenna is operational or not, call the wizard.
The receiver itself may also be faulty (the device that receives the signal is a TV or set-top box). Outwardly, it is almost impossible for an ordinary user to determine a breakdown, so it makes sense to send the device to a service center for troubleshooting.
It is not worth repairing such devices on your own without the necessary skills and qualifications. If there is a breakdown in the TV, the defective item will be replaced. Perhaps the contacts at the output for the cable were simply oxidized there. they will make you a simple soldering of the damaged area. If the attachment breaks down, most likely you won’t get off by replacing the element here. you will have to buy a new one.
TV writes that there is no signal: what is the reason and what to do
Someone likes to “surf” the Internet, while others watch TV. You somehow turn on your TV-device and you see the message “No signal” on the screen. You start switching channels. none of them show. Why did the signal suddenly disappear, what is the reason? Do you need to call specialists right away or you can decide everything yourself?
Reason on the provider side: maintenance or repair work
If you use digital, cable or satellite TV from a provider (pay separately for TV) and you have lost the signal, the company’s specialists are probably now repairing the line or updating the equipment. How to find out about technical work? Call Support for your job. this is the fastest and most reliable way.
Call your provider’s hotline to find out if technical work is ongoing
Of course, you can open the official website of the provider and see the information there. in the news section. But information is not always posted, so it’s better to call right away. If the work is actually underway, you will be told when it should be completed. If everything is in order on the line, you will be consulted on the issue. they will tell you what you need to do to return the signal yourself. If home remedies do not help, call the hotline again and call the master at home.
If you are unable to call your provider now, do the following:
- Take your TV or set-top box remote.
- Click the Menu button.
- Check if there is a No Signal Alert in the menu. If there are and the channels are not turned on, then the reason is on the side of the provider.
External factors: bad weather and its consequences, obstacles in the signal path
We have partially described the consequences of bad weather above. What if the signal disappeared after a strong wind or rain? An antenna or dish could change direction. In this case, you need to adjust the position of the device again. experimentally catch the correct one. To do this, you will need the help of another person: for someone to turn the antenna, and someone to watch the signal on TV. Note that you need to rotate the antenna slowly.
Your neighbors’ antennas can help you. see where they are pointing. For the most accurate angle setting, you can use the angle calculator, which can be downloaded from the official website of your provider. The initial information for the calculation is your location data. They can be obtained using the GPS of your smartphone.
When choosing a direction for a dish or antenna, be guided by the same equipment nearby
Perhaps it is raining, snowing, or a strong wind right now. In this case, there may be no signal. Here you will not do anything. you have to wait for everything to settle down and nothing will interfere with the signal from the tower to the antenna / dish.
If the weather is bad outside, the signal on the TV may not be available.
Poor image or lack of it may be due to obstacles that have appeared in the signal path from the tower to the antenna. It can be tree branches, buildings, buildings. If it’s just wood, cut off the part that covers the equipment. If this is a new build, move the antenna higher or find a location on the other side of your house. Again, specialists will be able to install the antenna correctly. it is better to entrust this task to them, if possible.
Checking the software part: how to update the firmware “Smart TV”
If it turns out that everything is in order with the equipment, there is no technical work, the weather is excellent, but the signal still does not go through, perhaps the matter is in the firmware. The developer of the Smart TV shell on your TV may have released a firmware update that fixes any bugs from the previous version. The update is important for the operating systems of all devices: not only for the computer, but also for the TV.
As a rule, all updates are installed automatically on TVs with “Smart TV”. But a failure could occur. then you need to start everything manually. How to do it:
The procedure may differ slightly for different devices, but it will still follow the same scheme. First, connect the TV to your “Wi-Fi” or wired Internet (insert the provider’s cable into the LAN connector) and set up the connection if necessary.
Internet can be connected to TV via cable
We are waiting for the firmware update to finish
First of all, call your provider if the “No Signal” error appears. The company may now be servicing equipment or troubleshooting a line. Even if it’s not about the provider, a support specialist will help you solve the problem. It is necessary to check the cable, antenna / dish for defects. If it’s a set-top box or TV, send the equipment for diagnostics. It also does not hurt to update the firmware “Smart TV”.
Crash Corrective Actions
In the process of studying the state of the equipment, when looking for a problem, it is worth carefully checking the overall integrity of wires and cables, the tightness of their connection. If breaks are found, these areas will need to be replaced.
The condition of the cables should be monitored very closely, they should not be twisted.
This affects the overall image quality, and if not repaired, the channels will no longer receive signals.
If, when examining the condition of the equipment, problems with multiple wires are not found, you need to carefully check the functioning of the receiver. It is important to study the density of the connection to the antenna. It needs to be connected to the antenna.
If it works and there is no signal at the same time, the cause of the failure is a problem with the antenna.
When these manipulations are performed in reverse, problems with the operation of the receiver are detected.
If a problem is detected with the receiver, the tuner, which is directly responsible for receiving the signal, is out of order. In this situation, it is better to invite employees of the service center to carry out repair work. If the specialists understand that the repair will not help, its replacement will be organized. If, in the process of studying the condition of the equipment, it becomes clear that the problem lies in the antenna, you will have to eliminate them on your own. The antenna of the Tricolor company gets lost for several reasons:
- Unfavorable weather. snow, rain and wind.
- Insufficient fastening of the device.
All this can be checked independently and the position of the antenna can be corrected with your own hands. To significantly speed up the process of fixing the problem, you can use the help of loved ones. They should be in touch and suggest whether the image is improving or not while the antenna is moving.
After finding the correct position of the device, you will need to firmly fix it by tightening the bolts and numerous nuts tightly.
If in the process of self-diagnosis there were no problems, we can suggest that the absence of a TV signal is a breakdown of the converter. This happens in over 50% of crashes. A qualified master can fix his work.
The company’s specialists advise you to have a spare converter on hand.
In the event of a breakdown, if none of the channels is working, you can replace it yourself.
Tricolor no signal on all channels today. what to do
Tricolor subscribers face a problematic situation when there is no satellite connection on the channels. If Tricolor does not have a signal from a satellite dish, the reason may be different, but users will immediately see the on-screen message “no signal”. The problem does not arise often, but know what to do.
Tricolor TV no signal on all channels. what to do
In the absence of a signal, you will need to try to identify the cause of the failure on your own, find out why the Tricolor does not have a signal on all channels, what to do. It is required to check the items of equipment:
- Receiver operation;
- The overall integrity of the wires, presence, absence of cracks;
- Converter operation;
- Antenna installation and correct basic settings.
After performing the manipulations, you can quickly fix the breakdowns and continue to enjoy your favorite channels on TV. If it was not possible to fix the breakdowns on your own, you can get advice at any time through the contact center, the service is always at the service of customers. They will tell you what to do if the TV does not work.
The main reasons for the failure
The reason for the complete absence of a signal on TV is the inability of the antenna to catch the desired waves. If a problem is found, you need to fix it yourself.
You need to make sure that there are no preventive work carried out by the company.
You can find out on the website by calling the hotline.
In the absence of prophylaxis, the reason for the complete absence of an incoming signal lies in other breakdowns. The equipment installed in the dwelling will need to be checked. If the company has a breakdown or is carrying out preventive work, you need to wait about 7-10 hours, and the broadcasting process will not fully recover.
In any case, the problem with the lack of a signal is quickly resolved. The most important thing is to take appropriate measures and carry out timely repairs. In addition, the employees of the Tricolor company are always ready to provide qualified assistance. Today, in 2021, service is at a high level.
How to determine the cause of the problem?
The lack of a TV signal is a fairly common problem that both owners of modern Smart TVs and owners of analog models face. Here you need to clarify the source of the data. For example, it shows a device from an antenna or satellite dish, or maybe it is connected to cable networks. In addition, it is worth clarifying whether the receiver works, if it is installed, 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 broadcast a very weak signal or not transmit it at all. There can be separate channels, appear and disappear. In addition, the quality of the signal is influenced by the operating conditions: the icy “saucer” 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 on the TV screen there will simply be an inscription “No signal”.
- The built-in receiver or external set-top box is broken. The specialists of the service center can more accurately diagnose the breakdown. Independent attempts to disassemble a complex electronic device may result in its complete failure.
- Doesn’t 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, TV signal reception will be unavailable. The data on the work can also be in the receiver menu, in the decoder settings section.
- The prefix is frozen, the signal has disappeared. This is a common problem with cable TV repeaters. A banal reboot with disconnection of the device from the network for 30-60 seconds will help to solve the problem.
- The signal from the satellite dish was lost due to external reasons. This is usually due to the appearance of interference or a change in the direction of the antenna. For example, it can be displaced by a strong wind, hail, a bird sitting on top. And also a new building in neighboring areas may be 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 are usually updated automatically.
These are the main problems, the causes of which can be identified by the user on his own when examining the problem superficially. If you need more in-depth diagnostics, you should first take a closer look at exactly how the screen looks after loading, what TV functions are available.
The screen is missing
The complete or partial disappearance of the image usually indicates technical problems in the TV itself. A more accurate “diagnosis” will depend on what can be established in the course of self-diagnosis.
Most often, when a user speaks 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 interruptions or breakdown of the video amplifier responsible for this tone. On a plasma display panel, the source of this problem is a breakdown of the signal processing unit. There are several of them, it is possible to establish exactly which module is faulty only in the workshop.
If a blue screen appears on an 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, appears 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.
Black or partially black screen
The complete lack of reaction to switching on, the black color of the screen usually indicates that the breakdown is quite serious. There are several probable reasons worth noting.
- Defective backlight. In this case, the TV retains all functions except for adjusting the brightness of the screen. By shining a flashlight on it, you can see the image. Replacing the LED backlight is done at the service center. If you do the work yourself, you can damage the matrix or other parts.
- The TV does not turn on at all, there is a noticeable smell of burning around. Most likely, the reason is a surge in the mains voltage. It is necessary to de-energize the device, contact a repair specialist.
- A black screen with a horizontal stripe in a light or bright color. The reason is in the frame scan. The problem is found mainly with CRT TVs, it is solved by replacing the unit. The vertical bar indicates a breakdown of the transformer in the line scan unit.
- The TV turns on, the screen turns off immediately. Most likely, the matter is in poor power supply from the mains. It is necessary to check the wire and the power supply, the outlet, the presence of voltage in the entire apartment.
- There is no sound or image, the display is on. Probably broken video processor.
These are just some of the reasons why the picture on the screen may disappear. If the breakdown is serious, it is better not to leave the device plugged in, you should try to call the master as soon as possible.
It is always necessary to consider the problems arising with the supply of a stable television signal in combination. If all external causes are excluded or they cannot be reliably established, you should pay close attention to the accompanying factors. For example, the presence of any image, inscriptions on the screen. All of this data will help you get a better understanding of the source of malfunctions.
No digital channels
The problem with the transition to an all-digital TV signal has led to a lot of questions from consumers. If your TV has a cable connection, there are many factors that may cause instability in the input data. For example, with the influence of external interference: ignition systems on cars, birds, poor quality of the general house signal amplifier. Do not assume that your 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 over DVB-T2, you need to correctly position the cable through which it is connected. The higher the wire is, the more interference will affect the signal. In addition, its distance from the set-top box itself is also important. an external receiver or built-in TV unit.
The loss of digital channels may be due to weather conditions: in winter, the 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 the antenna installed outdoors. 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. Channel reception will become more confident.
Connection through an external receiver. set-top box, may be disrupted due to the interruption of the contact of the plug with the jack 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 broadcasting the picture. In addition, a break may occur in the cable: it is worth buying a new one and testing it in operation.
Important! If not all, but only some of the channels disappear, the problem may be in receiving signals from several sources. Manual set-top box configuration will help to solve the problem.
What to do if there is no signal on the TV?
What to do if there is no signal on the TV, why does not it show from the antenna, digital channels stopped working. with these questions, the owners of modern TV equipment often contact service centers. In fact, most problems are fairly easy to fix on your own. How to do this and not harm the TV is worth talking in more detail.