The TV itself turns off and on

A modern person can not do without a TV. This is timely news, new films and favorite TV shows, entertainment and sports programs. Therefore, when there are any problems with the “pet”, we immediately try to fix it. Quite often, the following happens: the TV turns on and off itself. The reasons for such unusual behavior of the equipment are unknown, but it is necessary to eliminate the annoying malfunction as soon as possible.

The TV itself turns off and on

Obvious reasons

Modern “smart” TV equipment works through operating systems and in its capabilities has almost come close to the level of personal computers. Almost every platform has software in its arsenal that allows you to automatically turn off the TV at one time or another. For example, in the absence of a signal from the antenna.

The interface of operating systems on devices of different brands may differ: it is worth looking in the menu branches for the sections “Timer”, “Automatic shutdown / inclusion” or something similar. After deactivating the functional, the problem should disappear.

The included timer on the TV can turn it on and off without the knowledge of the user

Other technical and hardware nuances

If the equipment turns on and works for several seconds or minutes, and then turns off, then it is worthwhile to diagnose the main elements of the TV, and also check the local software. The cause of the malfunction can be covered in various places.

  1. Power Supply. Capacitors fail. Elements are checked with a multimeter and replaced if necessary.
  2. Board overheating. Using equipment with non-observance of the rules and recommendations specified in the instruction manual can lead to strong heating of the elements and, as a consequence, shutdown of the device.
  3. Deprecated Software. We update the software part of the platform to the current version through the local functionality. The procedure can be carried out “over the air” through the Network or copy the firmware to a USB flash drive and install it manually.
  4. Antenna interface. We check the connection quality: connector, cable and the port itself.
  5. Inverter. The element is extremely picky about high humidity.
  6. Dust. The dirt accumulated on the board can cause contact closure, which causes the equipment to turn off arbitrarily.
  7. Remote Control. The buttons on the remote control that have sunk from frequent pressing or the same dirt cause random operation of certain functions, and shutdown, including.

Dust accumulated inside the TV may cause malfunction

Consider the features of the diagnosis of individual elements.

Power Supply

This is one of the most important devices in the TV, the performance of which is worth checking first. The following symptoms may indicate the output of the power supply failure:

  • The equipment itself turns off after about 30-40 seconds after turning on;
  • With a working display on the panel there is no response from the PU;
  • The LED indicating power is turned off after some time after switching on or does not light up at all.

In a good half of cases, the problem with the power supply is in the fuse. A visual inspection of the latter should reveal tears, swellings and other signs indicating the need to replace the part.

Fuses on the TV power supply

Voltage problems

Power surges affect the operation of all equipment, but first of all on diodes and capacitors. If the latter burned out, the TV will turn off a few minutes after turning it on. The gradual attenuation of the display indicates faulty diodes.

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For diagnostics, it is necessary to open the case and ring the main board with a multimeter. Replacing burnt parts requires not only a wealth of knowledge in this area, but also a specific tool. Therefore, this problem is best left to professionals. Otherwise, you can burn the board, the replacement of which will lead to serious financial expenses.

To check the diodes and capacitors, it is better to contact professionals


It happens that in the process of checking equipment at the factory some additional functionality was activated, like the same shutdown timer. Therefore, after buying new equipment and the occurrence of such problems, it’s worth reset the TV to factory settings.

Some third-party programs, which, it would seem, should in no way relate to automatic turning off or turning on the TV, carry such functionality. It is worth checking the recently installed software for such features.

If activated manufacturer software automatic download, then some TVs require a reboot after updating. The problem is solved by switching the functional to manual control mode.

Automatic software update on LG TV


An unstable network can interfere with the normal operation of the inverter. As a result, the TV will turn off at certain intervals, the frequency of which depends on the nature of the malfunction. The inverter may fail for a number of reasons:

  • Power surges;
  • Overheating of the main elements;
  • High humidity;
  • Bloating capacitors.

Independent repair of the inverter, as well as in the case of the main board, requires certain knowledge and skills, as well as a specific tool. Therefore, the help of a professional here will obviously be out of place.

From this, the home master can learn useful information about identifying defective parts, how to change them, and other nuances:

You can also find out the nuances of self-repairing TVs of various brands from this article.

Human factor

This is the most influential reason for the failure of modern technology: many users are so inattentive that they can cause serious damage to household appliances, because they do not have special technical knowledge, and often even basic safety concepts. Loose contacts in the socket able to affect the spontaneous shutdown of smart technology. Thus, the built-in security system protects the TV from overheating and malfunctions.

If your TV suddenly turns off by itself, check the status of the outlet. If there are small children in the house, then such a check should be carried out regularly — several times a week, or make a hidden connection in a place inaccessible to them.

The life of most people without a TV is simply unthinkable. Therefore, if any problems arise with him, the person immediately tries to solve them. One of the most common problems is the situation when the TV spontaneously turns on or off. Naturally, to eliminate this problem, you must first find out the cause of its occurrence.


There are a number of reasons why the TV itself can turn on or off. But they cannot be called breakdowns. Such situations include incorrect device setup. There are many different models that, in the absence of impact directly on the TV or on the remote control, can automatically turn off. Also, there may be a randomly set program, according to which the TV turns on at a certain time. Therefore, if the TV itself turns off or turns on, you need to immediately check these functions.

Often when these problems occur, the reasons are not on the TV at all. Cases are common when the reason lies in the unreliability of the outlet or in problems with the network (power surges, etc.). Poor wiring contact can cause malfunctions. This problem can be calculated using a special indicator that will help measure the voltage in the outlet.

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Serious problems

I highlight the following really serious problems that lead to turning the TV off (off):

  • Dust accumulation;
  • Problems with the power circuit;
  • Power surges.

The next reason for spontaneous shutdown of equipment may be problems with the power supply circuit of the inverter. The cause of such problems is the formation of small cracks on the board, resulting from frequent voltage drops, heat, or exposure to high humidity over a long period of operation. Also, power circuits can fail due to breakdown of capacitors or places of connection of terminals of elements with pads of the printed circuit board.

The malfunction described above is a big problem, the elimination of which will require the involvement of a professional and the use of a specialized tool. You can detect the presence of this problem yourself. First, turn off the power by removing the back cover. Next, you can proceed to a visual inspection of the board using a special magnifying glass. Also, you need to take care of the good lighting in the room. The inspection procedure must be carried out as thoroughly as possible, since even the smallest cracks can cause the TV to turn on and off periodically independently.

The real misfortune of almost all modern electrification networks is constant power surges. This phenomenon very often leads to breakdowns of household appliances and its unstable operation when the appliance turns on (off) on its own. Voltage drops in the network lead to the burning of certain diodes, capacitors and other very important devices. After heating these parts, they begin to issue a breakdown, which is a signal for the fuse responsible for powering the device.

If the implementation of the above recommendations has not yielded results, and the TV still turns off itself, then to establish and subsequently eliminate the breakdown, you need to involve a professional from a special repair company. Simple shabashnikov cannot be involved in such tasks.

  • Simple Causes of a Problem
  • We deal with more complex reasons.
  • Self-fix the problem
  • Stock footage

Life without a TV in the 21st century is already completely different. But often the owners of SAMSUNG TVs are faced with the problem of turning off the TV themselves. Let’s try to figure out this behavior of the technique and find out what to do if the Samsung TV turns off and on itself. The causes of this phenomenon can be commonplace and are available for correction with your own hands.

Simple Causes of a Problem

There are many explanations for the independent operation of technology, and very often far from the manufacturers of equipment are to blame. So, here are the reasons that the Samsung TV itself turns off and on:

  • Incorrect settings. This is the most common cause. If you incorrectly configured the device by turning on the TV on / off program yourself, then only you are to blame. So before you run to the service center, check the availability of these settings in your device.
  • Poor outlet. Weak contact with electricity can be the main reason that the Samsung TV turns on and off immediately. Try using a special device that measures the voltage in the outlet.
  • Lack of internet connection, which is why the TV periodically reboots.
  • Frequent power surges, because of this, a spontaneous shutdown may occur.

Once you have checked and dealt with the problems of your TV, check whether the viewing angle of the TV matches the correct location. This is important for the quality of the picture, and for your health!

We deal with more complex reasons.

If everything is normal with the settings of the device and the voltage in the outlet, then you should “dig” deeper. Behind the independent life of the TV can be more serious problems, which can only be fixed by the master of the service center. So why does Samsung TV turn off and on?

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There are several dangerous phenomena for the TV.

Excessive dustiness of the device

It is a major major problem. It is dust that helps close contacts, although it is not a strong conductor of electricity. To remove dust, it is enough to simply vacuum the TV yourself, but many prefer to turn to a master who can professionally clean the device from the inside.

Power Circuit Problems

This reason can be identified by yourself:

  1. You will need to turn off the TV from the outlet and open the cover.
  2. Then we independently inspect the state of the board using a magnifying glass or other glass that enlarges the image.
  3. If you notice any, even the smallest crack on the parts, then this is the problem.

The power supply is defective

To make sure that it is working, diagnose the standby indicator. When responding to shutdown, we conclude that the breakdown is in the power supply.

If it was not possible to identify the problem yourself, we advise you to immediately call a wizard to help you figure out and fix the problem.

Perhaps, during the diagnosis, you also identified other defects, for the solution of which we also have a lot of useful information, for example, we suggest reading articles:

Self-fix the problem

In order not to attract a master and not pay him decent money, you can resort to fixing the problem yourself, but keep in mind that this can harm both your health and your equipment. You can use these methods if you are completely self-confident.

Dust in the device

This problem is much more common than others. Samsung TV constantly turns on and off (turns off) independently from excessive accumulation of dust, which, as mentioned, helps to close contacts

The way to eliminate it is also relatively easy. Simply vacuum your appliance with the smallest nozzle for a vacuum cleaner. It is not necessary to open the TV cover.

Inverter Power Circuit Malfunction

So, we found small cracks on the board that arise from sudden voltage drops, moisture accumulation, or overheating of the part.

If you nevertheless decided on this procedure, then here is the algorithm of actions:

After these steps, the Samsung TV should not turn on and off on its own.

Malfunction in the power unit

The power supply in your SAMSUNG, like in any other similar device, most often wears out due to constant power surges. Perhaps the main reason for actively turning the equipment on and off is precisely this. In this case, in no case can you trust yourself and repair the TV alone, you need to entrust your device to an experienced craftsman who will try to put your equipment in order.

You may also be interested in information about the best Samsung TVs.

Stock footage

From this article, you learned the main reasons for turning the Samsung TV on and off independently and ways to solve them. If these tips did not help you, and your plasma TV continues for some time, no matter how many minutes and seconds, repeat periodic shutdowns, then we recommend that you immediately contact a service center to fix the problem, or purchase new equipment.