Modern TVs are reliably protected from various types of breakdowns, it would seem that manufacturers have provided all the features. Therefore, users are surprised when there are visible malfunctions. After all, this is the type of equipment that is enough to turn on and off without much concern and load on the TV itself. But sometimes the screen starts to flicker, the constant image blinks, blinks, and viewing becomes impossible. This is a rare, but probable failure, arising for a number of reasons.
Why is the screen blinking?
The reasons for the appearance of this type of malfunction depend on the type of TV receiver. The assortment is represented by a wide variety, among which there are both the latest and outdated models. And if the appearance of the defect on old types of televisions is justified, then in modern types, the problem is ambiguous.
Common types of breakdowns:
- CRT TV - a failure in the frame scan or power board.
- LCD power board.
- plasma - improperly tuned antenna, intermittent reception signal.
REFERENCE: Plasma TVs are characterized by a stable picture, therefore they have the most unusual bad image. Often the reason is external, so you should check the cable and antenna, not the TV.
Technical issues
Most problems can not be fixed on their own, you will need to contact a service center. Therefore, it is recommended to call the telemaster in case of a malfunction, and not try to fix everything - this way you can damage the board more.
Before contacting, you can try to identify the problem, but in no case repair it. The following symptoms will help to conduct an initial diagnosis:
- The screen continues to flicker when viewed through a TV cable, but when connected to the Internet (in modern models), a stable picture remains - a defect due to the antenna.
- If the image on the satellite TV blinks, cloudiness is more often to blame, and the phenomenon is one-time.
- Defective cable connectors. The quality of the output image is significantly reduced and blinks if there is a failure in the cable connection. The socket will have to be completely changed.
IMPORTANT. Changing such a part is a difficult process, because due to the small size of the field being repaired, there is a big risk of damage to neighboring components. Therefore, an appeal to professional masters is mandatory.
- If the flicker is stable and repeats at some frequency, then the problem is definitely in the power board. Characteristic for LCD TVs.
Be sure to take into account weather conditions, as well as calculate the frequency of blinking pictures - this information will help the wizard more effectively deal with the problem. If the TV screen flickers continuously, then most likely the problem is still in the internal details.
TIP. When the problem has just occurred, it is recommended to disconnect the TV from the power supply and turn it on after only 30 minutes. If the problem persists, then contact the master.
TV signal quality issues
The problem is external if flickering appears after connecting any cable to the receiver. The reason in this case is precisely at the junction. The following defects stand out:
- Antenna malfunction.
- Broken cable insulation.
- Damage to the receiver.
The parts and equipment listed are tested to eliminate the cause of the problem.
If you have satellite TV
Satellite broadcasting is set up using a TV, receiver and antenna. The source is a plate or cable provider. The receiver decrypts the received signal, transmitting a picture. Malfunctions at any point in the signal transmission chain will lead to flickering of the screen, distortion of the displayed image. The appearance of other malfunctions is not ruled out.
TIP: Using the services of a satellite TV provider, you can call the hotline. The operator will help you determine the cause of the problem by conducting a joint diagnosis with you.
Another way is to simply disconnect everything from the TV. If the defect persists, then external problems are present - the cable must be replaced. But the receiver can only subordinate the master, because the defect is most likely in the receiving module.
What can cause interference if you have cable TV
In this case, even fewer options - you need to inspect the cable for mechanical damage. Then you just need to call the office of the provider and call the repairmen. In addition, it arises due to a plug defect - the defect can no longer be handled independently.
Analog and Digital TV
The problem, most likely, is the antenna, since it is equipped with electronic readers. It's easy to check - you need to move or disconnect the antenna. If the flicker does not disappear, you need to test the cable - disconnecting it. Replace part if a problem has been identified.
Separately, it is worth noting that in some cases, the image flickers on new televisions. Most likely, this is a factory marriage, which can not be fixed on its own. You need to contact the store and exchange equipment, according to the warranty period.
Image problems are not uncommon for TVs, but the reason is almost always external. Therefore, for diagnosis, it is better to call the telemaster, he will quickly find and eliminate the cause without any special costs.
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