The settings go astray absolutely by accident. In this case, it is recommended to return the tuner to the factory settings. The only caveat is that the user will have to search for TV channels again and tune them.
No contact with the cable
A common problem is wire failure. With prolonged use, the casing is erased and the contacts come off. This interrupts the connection between the router and the antenna. Inspect cable integrity carefully. In case of breakdown, purchase a new one and replace with it. The choice is for everyone!
The equipment is out of order
A popular mistake is the breakdown of the equipment itself. Check the condition of the receiver, antenna and wire. Learn the technique and check the receive connections. Try to turn on the set-top box using the control panel. The device should light up red. If the action is not activated when pressed, then the problem is in the tuner itself. The indicators should be on, and the wire should be in good working order. It is recommended to measure the voltage level of the device, check the integrity of the cables and plugs. Reboot the devices and turn on again. If the picture and sound disappear completely, contact the service center. We do not recommend repairing the equipment yourself. Cause irreparable damage to the device.
Technical work is the reason for the lack of broadcasts. The company cares about users and warns about prevention in advance. Visit the company’s website and explore the disconnected territories. Find the area and time of work in the list. During this period, some TV channels will be blocked.
Breakdown of the TV
How to determine that the breakdown is related specifically to the TV? The device screen will display the message “no signal from the router”. This means the tuner is working, and the point is in the TV. Due to voltage surges, equipment often fails. Supply a special stabilizer against power surges. So, you can save any device.
Accidents at sites or broken wires entail the shutdown of TV channels. Access to broadcasts is automatically disabled. Immediately after fixing the problem, the channels work as usual.
Why digital television does not work today: reasons
Not sure why digital TV doesn’t work? Research the problem before taking action. There are many reasons for the lack of a signal. Most popular mistakes:
- lack of signal from the TV tower;
- deterioration of the weather;
- engineering works;
- breakdown of the device itself.
First, conduct an easy diagnosis of the device. Study the main symptoms and correlate them with the causes. Unfortunately, many failure factors are independent of the individual. Due to weather conditions, the picture disappears and the sound becomes choppy. The absence of a signal indicates technical work. In this case, patience is required. Wait a few hours and turn on the TV again. If the situation has not changed, call the service center of the service company.
Digital receiver power supply failure
Cheap set-top boxes do not have high-quality “stuffing”. They are made of poor materials that wear out quickly. Checking the power supply is easy enough. Open the cover of the machine and check its condition. A swollen capacitor indicates a malfunction. Have the device repaired by a specialist.
Heavy rain and snow, gusts of wind and bad weather will affect the receiving signal. Because of this, the sound quality and picture deteriorates. Often there are only 10 channels out of 20. Some users lose all broadcasts altogether. The only way out is to wait for another weather. Check the signal strength later.
Why there is no signal on the TV and how to fix the problem yourself
Due to bad weather or hardware problems, your TV may experience no signal problem. If it is pouring rain, snow or wind in your area, your cable TV operator or streaming service provider will display an error message when they receive an alarm message.
You only have to turn off the device for a while before the signal recovers. Since, today, modern satellite dishes are designed in such a way that they can cope even with extreme weather.
In all other cases, if you are sure that there are absolutely no problems with the hardware of the TV, the problem may be a software update. Follow the SIMple troubleshooting steps in this guide to fix no signal issue at no extra cost.
As mentioned above, one of the reasons for the lack of a signal may be tree branches, strong wind, rain or snow, which in one way or another touched and damaged the antenna or satellite dish.
To solve this problem, first you need to find out in which direction the equipment was originally located.
It is also possible that the cause of the bad signal was the appearance of an obstacle, for example, a tree has grown and its branches interfere with signal transmission.
In this case, the solution is SIMple. cut off the interfering branches.
But what to do in a situation where you cannot remove the obstacle that has appeared? For example, building a new building by neighbors or expanding a house.
Then you can change the location of the TV antenna.
If initially it was installed in the correct location, then due to a strong gust of wind it could move and that is why the signal on the TV disappeared.
First you need to select the desired turning angle, you can peep in which direction the neighbors’ antennas are located and do the same.
You can make the finest possible adjustments using the angle calculator. Look for it on the provider’s website.
The program will automatically calculate the location for the antenna in order to maximize the quality of the TV signal transmission.
Also, weather conditions, including heavy rain, snowfall and wind, affect the quality of the broadcast image on the TV screen.
In such a situation, it is more likely that it will not be possible to obtain the ideal signal quality, the only thing that can be done is to move the plate to another place, but again it should correspond to the value obtained from the angle calculator.
Not all channels are showing
A weak signal can be the reason why TV broadcasts only a part of digital channels in unsatisfactory quality. This happens for a number of reasons, primarily if you have not received system updates.
Which, in turn, could restore the quality of the TV signal, but how to update the software is detailed above.
Or, due to the use of incorrect settings, the signal disappears precisely for this reason, which is most typical for satellite television.
The problem is solved quite SIMply, you need to open the settings, select the appropriate satellite and frequency, move the cursor to the channel and press the “OK” or “Info”.
Next, the port is selected, it is best to use a 4-port DiSEqC. After selecting the port, the display will show colored stripes, then save the set parameters. The rest of the satellites are configured in the same way. It happens that the tuner loses the signal.
In this case, if there is no signal, flashing the decoder will help.
Operator technical work
If, however, the signal disappears in rare situations, you should think about carrying out preventive work by your operator.
The only way out of the situation is to wait a bit until the technical work is completed, usually they do not take much time.
And in order to learn to distinguish one reason from another, you must:
- take the remote control from the receiver;
- enter the system menu;
- check if the inscription “no signal” appears in the receiver menu.
In the case when the system menu also notifies of the absence of a TV signal, we can safely conclude that it was the operator who had problems.
Your set-top box may be the reason for the lack of signal in some cases. Whether you are using an SD or HD box, the vendor can release new firmware and update it in the background. This means that new satellite settings have been loaded, but the device is not fully integrated with the settings.
To solve the problem, unplug the power cord and plug it back in after 30 seconds. Make sure the TV is turned off. You might also want to remove the Smart / Viewer card and wait for the cable box to cool down. Later insert the card with the chip down.
If the TV and all other connection elements, including: cables, antenna, and receiver are in order, it is logical that the reason lies in the Smart TV firmware. For example, Samsung regularly releases software updates.
It is not recommended to ignore new firmware versions, since the provider specifically creates them to optimize the TV and eliminate previous errors.
To restore the signal on the TV, you will need to manually update the software, if this did not happen automatically for some reason.
This is not done as difficult as it might seem at first glance.
It is important to follow the step-by-step instructions and everything will work out:
- Connect the device to the Internet, preferably to your home Wi-Fi network.
- Press the “Menu” button on the remote control, and then open the basic settings.
- Switch to “Support”, and then go to the “Software update” section.
- Further steps depend on the specific TV model. Find the sub-item “Online” or “Update now”. The names may differ, but the general principle of operation is the same.
- The operating system will automatically check for new software versions and will offer to install a new firmware. Press the “YES” button and wait for the download.
- Wait for the final completion of the installation.
- After the installation is complete, the TV will be forced to reboot.
- Check for signal presence and re-tune channels if necessary.
The update process may differ from TV to TV. Usually the official website of the manufacturer’s company is equipped with step-by-step instructions for installing the update manually.
The most common reasons why there may be no stable signal are related to hardware problems, namely
- Defective satellite dish or antenna;
- HDMI cable / port problems;
- HDCP errors;
- The satellite converter is out of order.
If a satellite dish is used to receive a signal, it is necessary to check its correct position. Someone may have accidentally hit your satellite dish or TV antenna, it may have been blown away by a strong gust of wind, or fallen branches, or other debris may have fallen into it.
Replacing a satellite dish can be a very time consuming process and if you do not fully know how to do it correctly, it is better to seek help from a specialist. Otherwise, you can damage both the devices and get hurt yourself.
Sometimes it is enough to wipe off the dust, or clean the surface of the receiver from dirt.
It is quite obvious why the TV writes no signal if the connecting cable is damaged. Since in such a situation a bad connection to the TV will be transmitted over the satellite dish or antenna.
First you need to check the plugs and the cable itself for visible defects.
But the signal also depends on the quality of the cable itself, so it’s not worth saving and buying the cheapest wire.
In most cases, the cause of the no signal problem can be caused by either the high-definition multimedia interface (HDMI) cable or the ports. If the connections are not tight or the corresponding ports may be slightly damaged. Nothing wrong with that, since any TV mechanic can handle such a problem, as a last resort you can SIMply switch to an alternate HDMI port (Most TV manufacturers include at least two HDMI ports.)
In some cases, your TV may experience a so-called High Bandwidth Digital TV Protection (HDCP) error. This is an anti-piracy measure that suggests that unlicensed devices should not receive any content from digital TV. Nowadays, almost all modern TVs must be HDCP compliant.
If you’re trying to connect, say, a Kodi box to your TV via HDMI, a no signal message will show due to HDCP error. You will have to remove the offending device, and then the connection should be restored.
To solve this problem, it will be necessary to replace the faulty equipment with a new one.
How to solve the problem
If the TV stopped working, then after identifying a specific cause, it is easier to solve the problem, even on your own.
If there is a cable break or receiver breakdown, only replacing the equipment with a new one will help. However, you can try to solder the damaged wire by first stripping the insulation and treating the contacts with rosin, twisting the broken wires together.
If the connector for the cable is broken, you can also try to solder it. Having previously disassembled the broken connector and identify the gap, treat it with rosin, and then solder.
If you understand that there are some problems with the satellite dish or antenna, then it is important to identify the specific reason before you start to act, most often, the reception of information is limited due to dust or dirt accumulated on the surface of the equipment.
To solve such a problem, it is corny SIMple, you need to clean the antenna. In winter, it is possible that there is snow and ice on the surface, which should be carefully cleaned from the antenna so as not to damage it.
If this does not help, then most likely this means that the reason for the lack of signal lies in the wrong position of the dish. To make sure of this, it is enough to slightly tilt it to the side, first to the left, and then to the right, and mark the changes that have occurred as a picture.
And if, when turning to one of the sides, the picture quality has improved dramatically, you should turn the antenna further, looking for a “peak” of image quality, after which the image will start to deteriorate again.
Do not forget that the full transmission and reception of the signal is also interfered with by foreign objects, trees or houses standing directly opposite the satellite dish. If you cannot influence the obstacle in any way, just raise the antenna slightly higher.
But it is not always possible to solve the difficulties that have arisen on your own and therefore you should not refuse outside help.
For example, if your provider is Rostelecom, you can call a wizard at home, who will accurately identify the cause of the problem and help fix it.
Each digital TV user has faced the fact that the broadcast stops or the interference becomes so strong that it is almost impossible to watch it. the picture crumbles into fragments, the image is divided into stripes or squares. Despite the fact that this problem occurs more often with satellite TV, it is not alien to digital TV.
There are two main problems causing the signal to drop out:
- bad weather;
Each of them has its own symptoms and solutions.
Bad weather, such as a thunderstorm or storm, leads to the fact that the signal going to the receiver becomes rather weak. Constant electrical discharges during the same thunderstorm SIMply prevent the TV signal from passing from the antenna. It manifests itself like this: channels are found, but constant interference and freezes interfere with watching, or the set-top box did not find a specific signal at all, or does not find all channels.
In this, we will consider the reasons for the lack of a signal on TV:
Another case of image disappearance is preventive work. During them, the picture disappears immediately, without any preliminary interference and freezes. It is not uncommon to see a warning message on the TV screen. But if it is not there, then the consumer is offered to make sure that he really has prevention by going to the website rts.ru. This resource provides all the information about the dates and duration of such work.
Malfunctions of digital television and their elimination
There are many reasons why connected digital television does not show. But in most cases, consumers have to deal with:
- lack of signal;
- settings problems;
- the prefix does not work;
- limited operation of the first multiplex.
Why is there no digital TV signal
Every consumer has at least once faced the fact that he does not have a signal from digital television. Sometimes the reasons for this are completely incomprehensible. And not everyone understands how they can cope without the intervention of the masters. But in many cases, SIMple manipulations by the consumer are enough or do nothing at all, but just wait.
Doesn’t show 10 channels
Residents of many regions are faced with such a situation when one day alone will be left with only 10 working channels of the first multiplex. And this is despite the fact that all digital equipment works quite correctly. In this case, the first thing to do is test the signal. The reason for its absence is often the shutdown of the second multiplex.
This usually happens due to the fact that the second multiplex was in test mode and was turned off as soon as the need for such work disappeared. Unlike the first, it is not required and is not even present in all regions of our country. Therefore, when faced with such a problem, it is worth, firstly, to find out if there is a signal of the second multiplex in a particular area at all.
The prefix does not work
There are many reasons why digital or cable TV does not work. Of these, three are considered the most common:
- non-working prefix;
- broken antenna;
- damaged cable.
Faced with problems, the first thing to do is to determine which particular cause will have to be fought. Each of them has its own symptoms and solutions.
Receiver breakdowns are one of the most difficult and incomprehensible problems for most ordinary people. This is still a new device for many compatriots, so they prefer to immediately transfer it to the hands of the masters to repair it. But is it always necessary?
The first step is to figure out what are the symptoms of this particular malfunction. They are quite SIMple: if the set-top box is broken, then the indicators that should light up during switching on do not do this. Or the light is on, but extremely weak. Or does it light up not what it should.
Often the cause of the malfunction is a problem in the power supply, as a result of which the current does not flow or is flowing intermittently. This is a breakdown that you can fix yourself. The power supply for receivers is often independent and has a power of 5 volts, and the adapter is standard. It is easy to check the operation of the latter by connecting the corresponding part from the router.
A multimeter is not particularly relied on when checking the operation of the power supply. The fact is that in the absence of loads, this device will still show the required 5 Volts.
There are symptoms that most likely cannot be eliminated without the help of a specialist. So, the receiver starts to randomly reboot or the sound becomes too weak, disappears altogether, despite the fact that there are no problems with the TV speaker. The set-top box for digital TV does not catch channels at all, although the indicators are on.
It is extremely rare, but you can still encounter problems with the operation of indoor antennas. The reasons for the malfunction can be different. from mechanical damage to the same thunderstorm. The obvious sign that something is wrong with her is a failed attempt to reconfigure the receiver. If even after several such attempts no channels are found, it is worthwhile to start correcting the situation:
- Check the integrity of the plug and wires.
- Check the amperage from the power adapter.
- Try to connect a new antenna.
The last, but extremely common problem of reasons with the display of TV-channels is a damaged cable. It leads to the fact that the signal coming through the wires is lost. Accordingly, the main symptom is that the TV does not show any channels at all, although there is no planned prevention.
Faced with a SIMilar situation, the first step is to check the integrity of the cable along its entire length and connections. The most fragile is considered to be the RG-6 wire intended for indoor installation, which is distinguished by its white color. Sometimes it is used outdoors, which significantly reduces the life of the wire.
There are situations when problems are caused by a combination of several factors, but they are quite rare.
Refer to a wizard to troubleshoot digital TV problems
The problem with the fact that digital television is not tunable is one of its most common breakdowns and repairing such a malfunction of digital television is actually not that difficult. In most cases, it is enough just to contact the operator and resolve the issue by phone.
In some cases, the television starts working after the receiver is rebooted. Although before that the TV could not see the set-top box at all. To do this, turn it off for literally ten seconds and turn it on as usual.
There are many answers to the question why digital television does not work. In fact, most problems are easy to fix. To do this, you must either additionally tune the tuner, or find out if the cable is cut somewhere, or wait until the bad weather passes. In some more complex cases, it is worth contacting the masters of your operator company. For example, when the receiver does not want to turn on at all or does not turn off.
This moment is relevant for satellite and terrestrial TV. The broadcast quality can be affected by weather conditions: rain, thunderstorm, strong wind, heat or frost. During bad weather, sound disappears, artifacts appear, or the TV does not show at all. Electrical surges in the network caused by lightning can disrupt equipment.
High humidity will negatively affect the conductivity. The TV may display the message “No antenna signal”. Frosts that come immediately after a rain can damage equipment, especially satellite, if the transmitter is installed directly on the dish.
Problems with the receiver (transmitter / TV tuner / set-top box) are expressed in different ways depending on the manufacturer and the specific model of the device. There may be the aforementioned “No signal” message, ripples on the screen, or a lagging picture with sound.
The first thing to do is turn off the TV tuner by unplugging the power cord. You should wait 2-3 minutes and then turn it on. If the message “No TV-signal” continues to light on the screen, then it is quite possible that the device’s motherboard is out of order. It is not possible to solve this problem on our own: a new transmitter is needed.
If, when connecting the receiver to a TV, the image flickers on the screen, then it is worth checking the quality of the connection of the device to the TV and antenna. If there is no other TV tuner at hand to check, then you will have to carry it for repairs or call a specialist at home.
In the case of multifunctional equipment, when a TV tuner is one of many roles, you may need to update the software on the set-top box. Current software and codes can solve the flickering picture problem.
First of all, you need to inspect the plugs, whether they sit tightly on the cable and in the connectors: in a good half of the cases, the reason for the lack of a signal lies precisely in them. Then check the loop for physical damage up to the switchboard (cable TV), or to the antenna (terrestrial and satellite TV). The signal disappears even if the outer sheath is slightly damaged.
If there is damage in the room, then the cable will have to be changed on its own. In other cases, you need to call the provider with a request to fix the problem.
If you do not show satellite, cable or terrestrial TV channels, then the problem may be in the TV itself. First of all, you need to check the plug. It should fit snugly in the device interface.
In case of noise, artifacts and other interference during the broadcast of satellite or cable TV, it is worth updating the TV software to update the codecs. Here we are talking about Smart devices from Samsung, LG and devices from other brands.
If the TV says “no signal”, then the reason for this may be faulty equipment: cable, receiver, antenna or TV. Let’s consider all the factors in more detail.
Why the signal on the TV went missing
Today digital broadcasting has almost completely replaced analog TV from the market. But along with a clear and rich picture in high resolution, problems specific to this format appeared. One of the most common. there is no signal on the TV.
This is due to the fact that digital TV is much more picky about related equipment, in contrast to analog TV, where in a good half of the cases it was enough just to move the antenna. We will figure out why the signal disappeared, and how to fix it.
If we are talking about free on-air channels, then first of all it is worth visiting the official website of the RTRS. This can be done both from a personal computer and from the TV itself, if it is connected to the Network, by typing https://rtrs.ru/ into the address bar of the browser. If you do not have access to the Internet, you can call the RTRS hotline 8-800-220-20-02 and ask the operator about preventive maintenance.
At the top of the interface, select your region from the drop-down list. Below there will be blocks with information for clients, where there may also be an announcement of the format: “Short outages of the TV and radio signal from. to. month”. During equipment maintenance, the “No signal” message should appear on the TV screen. When there is an image, but it flickers or freezes, then something else is involved.
If digital TV broadcasting is organized by paid providers, via satellite or cable TV, then you need to contact them. All contact information is indicated in the contract for the provision of services: the address of the web resource, phone numbers, Email, etc. There may also be a memo indicating what to do in case of signal loss.
Another reason why the channels are not working is the antenna. Most often, problems arise with inexpensive decimeter devices for terrestrial TV, because satellite dishes are installed, as they say, tightly, and adjust the optimal angle using special devices.
Strong gusts of wind can change the position of the antenna and a weak signal will cause noise artifacts. In this case, you need to adjust the position of the equipment and remember for the future its optimal angle of inclination and height.
Some TVs, such as Philips or Sony, run the Android platform. Others like Samsung and LG use their own OS. But the principle of renewal itself remains unchanged. The main thing is that the TV is connected to the Network.
Let’s consider a firmware update using LG devices as an example:
- Open the main Smart TV menu with the Settings key on the PU.
- Click on the “Settings” item and open “Support”.
- In the “Software update” section, press the button “Check for updates”.
- Next, the found current firmware version will be displayed.
- Click “Update”.
If nothing happened after checking for a new firmware, then this means that the current software version is up-to-date and no action is required. The window “The latest software version is installed” may also pop up.
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 picture 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 signal enters the TV through the antennas via a special stream, and is decoded on the TV itself, and the user receives a high-quality image.
Receiving digital broadcasting is carried out in several ways:
- over-the-air. the picture is received through the relay towers;
- 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.
Digital channels disappeared: why does not digital TV show and what to do if there is no signal
The digital format of television assumes a better picture and sound, but in reality, users often face a number of problems, one of which is the interruption of the digital signal. Why do digital channels disappear and what to do if digital TV does not show.
Reasons why channels on digital television are disappearing
There are situations when channels on the TV disappear abruptly or after turning on the TV. one, several or all at once. There are a number of reasons why this situation is possible.
TV does not find all digital 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, this equipment does not function adequately, the devices 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. These situations should be avoided.
- The base frequency of receiving the signal 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.
- Lack of DVB-2 support. If the 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, due to which the digital TV signal disappears and channels are lost. 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.
Digital TV signal disappears, what are the reasons and what to do:
It is possible that the problem lies not with the devices, but with external factors. The most common can be the banal absence of the emitted signal from the operator. This may be due to various kinds of preventive or technical work. Finding out whether this is really so is very SIMple. You can see the information on the official website of the provider or call the hotline.
You can also check the signal status by opening the receiver settings menu. If there is no signal, a corresponding message should appear. The only solution to this problem is waiting. After a while, the work on the TV station will end and broadcasting will start again.
Also, the lack of broadcasting may be due to weather conditions. Thunderstorms or heavy rainfall can impair signal reception. Also, external obstacles can interfere with the passage of information, creating interference and distortion in the channel.
Reasons why the TV does not pick up the signal
There are several main reasons why the TV does not pick up the signal. First of all, you should check the operability of the receiver or receiver, which should receive and process information. Often, due to hardware problems, the signal, having reached the antenna, is not sent to the TV screen. This may be due to a broken cable or breakage inside one of the devices.
There are also a series of external problems. For example, loss of signal due to weather or lack of data transmission from the station. All these factors also lead to the fact that digital or ordinary TV-receiver does not show.
What to do if there is no signal on the TV
One of the most common problems with a TV is the lack of a signal. The problem is quite unpleasant, and not everyone, even an advanced user, can solve it the first time. This article discusses the main reasons and how to solve them, if there is no received signal on the TV device.
Internal problems are primarily caused by hardware problems. The most common cause is a broken cable. In such cases, the TV may either not see the signal at all, or the image will be distorted by noise. In this case, the SIMplest solution would be to replace the cable with a new one. If the user has replaced the damaged cable, and the problem persists, check the input and output connectors to which this cable was connected. It is quite possible that during long-term operation of the device, the insulation and integrity of the connectors has been damaged, due to which some of the information may be distorted.
Another reason for the absence or change in the signal may be a breakdown of the receiving antenna. How to fix problems in the antenna will be discussed a little later.
The last reason for the absence of a picture is a breakdown of the receiver. In the event of a failure of this device, the user has no choice but to replace the non-working receiver with a new one.
How to deal with the problem yourself
After almost all the factors are indicated, you should find out how to deal with most of them and what to do when the TV receiver writes about the absence of a signal.
If the cable breaks or the receiver breaks down, replace them. If there is no way to replace the damaged cable, then you can try to fix the problem yourself. solder the broken wires. To do this, strip the insulation, treat the contacts with rosin and, after twisting them, solder.
In the event of a breakdown of the cable connectors, the only possible way to fix it will also be soldering. To do this, disassemble devices with a broken connector and, having found wire breaks, treat them with rosin, and then solder.
If the problem is in the receiving antenna, you need to deal with the cause. It is quite possible that the antenna stopped receiving information or began to distort it due to dust and dirt on the receiving surface. The solution to this problem will be a banal cleaning of the antenna. In winter, snow or ice can be a problem instead of dust and dirt.
If the signal quality has not improved, the problem may be in the direction of the receiving antenna. To do this, turn it slightly first to the left and then to the right and observe the change in image quality. In the event that, when turning to one of the sides, the picture quality has improved dramatically, you should turn the antenna further, looking for a “peak” of image quality, after which the picture quality will start to deteriorate again. Adjacent antennas, which have already been adjusted for the best signal reception, can serve as a guide for turning.
In many cases, the problem of no signal can be solved by yourself.
What affects the signal quality
The following factors affect the quality of a digital signal:
- Antenna power. An external roof-mounted antenna will be much better at receiving digital signals than a SIMple indoor antenna. If the antenna is also equipped with an amplifier, then you are unlikely to have problems with the signal quality;
- The location of the antenna and its distance from the TV tower. The closer the antenna is to the TV tower, the better the signal will be. It is for this reason that people often complain about the quality of the signal at dachas and other areas remote from the city;
- The operability of TV equipment. Digital signal problems cannot be avoided if your TV or receiver is defective. The reason can be both mechanical damage and system malfunctions (incorrect settings, bad firmware, etc.).
Possible reasons for no signal
The reasons your TV is not receiving digital terrestrial signal may be the following:
- The antenna is defective or is far from the nearest TV tower;
- The cable or connections are damaged. They may have become rusty;
- DVB. Set-top box is faulty for technical reasons. If the LED is off, then the reason lies precisely in this;
- Poor set-top box software;
- Tuner settings have been reset (possibly spontaneously);
- Unsuitable weather conditions;
- Emergency situations or repair work;
- Disconnection of broadcasting due to maintenance work.
Often the reason for the absence of a TV signal can be accidents, as a result of which digital television will be turned off. In this case, nothing depends on the viewer. he can only wait patiently until the special services eliminate the consequences of the emergency, and television broadcasting will be restored.
Receiver defective or incorrectly configured
If the reason for the lack of digital television lies in the receiver, you will see the inscription “NO SIGNAL” on the monitor. To remedy this situation, use the tips below:
- Check if the attachment is connected correctly. An antenna must be connected to it, and it itself must be connected to the TV via SCART. RCA or HDMI;
- If you have a satellite receiver with two outputs, connect to the other output;
- Replace cable. It’s fragile and prone to failure, especially if it’s HDMI;
- Try a different connection method. For example, if you connected via HDMI. connect via tulips;
- Change the firmware of the receiver (more detailed instructions will be given below).
Where to call if there is no digital TV signal
If none of the tips indicated in the article helped you, contact RTRS for help, where people who are professionally involved in this will explain everything to you in detail. The hotline number for this service is 8-800-220-2002. Today, the RTRS hotline operates around the clock, so if you do not have a digital TV signal, you can call at any time.
How to fix the problem
Now that we’ve covered the most common problems, it’s time to figure out how to solve them.
Checking the quality of cables and their connections
Checking the antenna cable is a rather complicated process, so if you do not have the knowledge and skills in the field of electrical engineering, it is better to entrust it to a professional. If you are confident in your abilities, then use the following guide:
- First of all, disconnect the TV from the electricity and disconnect all cables.
- Take an ohmmeter and check the resistance value between the ring and male antenna contacts. If it shows infinity, then there is a break in the antenna cable.
- Remove the antenna cover and use an ohmmeter to check the resistance first in the braid, then in the center core. If the antenna is normal, then these indicators should be zero.
- Attach an ohmmeter at both ends to the sides of the antenna cable, then connect it to the center conductor and braid on the plug side. The exponent should be equal to infinity. Then connect the jumper to the other end of the wire. The resistance index should be close to zero ohms.
- Check the integrity of the cable. It may have dents or other deformations. If there are any, you need to clean up the dents, then merge the contacts.
The first thing to look for when tuning your antenna is its position. It differs depending on the type of antenna:
- If you have internal antenna (it is also indoor), install it as close to the window as possible so that it falls within the range of the nearest television tower.
- If you have external antenna, install it on the roof as close to the TV tower as possible. An online service will help you find out the location of the towers https: //card.rtsr.rf.
- If you have satellite antenna, position it as high as possible so that it faces south.
The second thing to check is the fact that power is being supplied to the antenna amplifier. This parameter is activated in the tuner menu. The process is described in more detail in the instructions below:
- Turn on your TV and set-top box.
- Switch to the “AV” mode by pressing the corresponding button on the remote control from the TV.
- Press the “Menu” button on the remote control from the receiver (not on the TV remote control).
- In the menu that opens, find the “Antenna Power” parameter and specify the “ON” value.
- Click “OK” to confirm the changes.
What to do if there is no digital TV signal
The analog signal is notorious for its interference and strong dependence on external influences due to its continuity. With a digital signal, the situation is completely different. if something interferes with its delivery, then in most cases it SIMply disappears without tormenting the viewer with visual and sound distortions. There are several reasons why there is no digital TV signal, and we will analyze them in this article.
- Possible reasons for no signal
- What affects the signal quality
- How to fix the problem
- Antenna tuning
- Checking the quality of cables and their connections
- Receiver defective or incorrectly configured
- Receiver firmware
- Can’t receive a signal normally
- Emergency situations
- What to do if the digital signal intermittently disappears
- Where to call if there is no digital TV signal
- How to amplify a digital TV signal with your own hands