Why does the TV turn on and off immediately: reasons and what to do?

No household appliances are insured against breakdowns. Sometimes the essence of the malfunction is understandable, it is simple to fix it. But there are breakdowns with several reasons, therefore, a successful repair depends on the accuracy of the “diagnosis”. Problem: the TV itself turns on and off a few seconds after turning on, it has several possible reasons. Let's try to figure it out.

Overview of the simple causes of a spontaneous failure

Such a problem arises with modern models, including Samsung, LG, GVC TVs. But sometimes even older models like the Rubin TV have a similar problem - they turn on and off immediately. A TV breakdown is also considered to be turning it off without user intervention for indefinite periods. The reasons that can lead to the fact that the device turns on and off immediately, in fact, a lot. However, not all of these cases are malfunctions.

Among them it is worth highlighting:

• incorrect functional setting of the device. Many models modern tvs equipped with a function of automatic shutdown in the absence of a reception signal and action on the TV remote control;
• random installation of a program that sets a specific time after which the device turns off (after 30 minutes or seconds, for example).

How to eliminate:

• enter the menu, check the functions that the TV is configured for;
• disable the shutdown time setup program.

If you encounter this kind of problem, it’s worthwhile to understand that it may not be the TV. Quite often there are cases in which the cause is a power failure (the presence of constant power surges) or with a low quality of the outlet and its unreliability. The cause of the failure may be a loose contact of the electric wire, then the TV turns on and off by itself. In order to determine the reason why the TV turns off after a while, you need a voltage indicator, by means of it you can measure the voltage in the network.

Power supply failure

To check the operation of the power supply, which can also cause the TV to turn on and off spontaneously, you need to do diagnostics for the standby indicator. If it reacts to switching on, but blinks at the same time, this may mean that there is a breakdown of the power supply itself or other details. Once this happened, you need to turn in the TV for repair. There are no other options.

If the indicator is constantly on when you turn on the power button of the remote control or TV, this means that there are problems with the power of the device. If the indicator turns off when the TV is connected to the network, you can check whether it has turned on by pressing the "menu" button. When the menu appears on the screen, you can conclude that the malfunction is the incorrect connection of the antenna or other devices. If the outlet works, and the indicator does not respond to power on, then the power supply is faulty.

More serious problems

If the TV spontaneously turns on and off, this can be a more serious problem. How such a failure looks, the reason for which lies in the device itself, can be viewed here:

It happens that the duration of the equipment depends on the frequency at which the signal is received. This means that when one channel is activated, spontaneous shutdown does not occur until the switch to standby mode. On the other channel, the TV works for a short time and turns off every 2 to 3 minutes.

The most common reasons that the TV turns on and off immediately can be:

• incandescent dust on the surface of the board;
• regular power surges;
• malfunctions in the inverter power circuit;
• software crash.

Because of the above, any device, including a TV, suffers. Let us consider in more detail the reasons because of which it turns on and off immediately.

Blame dust accumulation

Incandescent dust on the board is most common. Despite the fact that dust is not a powerful electrical conductor, however, this parameter may be enough to short the contact areas on the printed circuit board. The most correct and only possible in this case is the use of a vacuum cleaner for cleaning, removing accumulated dust. You need to remove the back panel, carefully walk on the surface of the TV parts.

Inverter problem

Another equally common reason for self-shutdown is all kinds of problems associated with the inverter power circuit. A common reason for such breakdowns when the TV itself turns off is the appearance of small cracks on the board.

The reasons for this are:

• constant voltage drops;
• strong heating;
• the effect of a high level of humidity, temperature changes during long-term operation;
• breakdown of capacitors or places of connection of elements and areas of the printed circuit board, as a result of which the television by itself decides how to work.

The last malfunction is quite serious, it can be fixed in the service center by a master who specializes in repairing TVs.

How to determine the cause of this problem yourself:

• turn off the power;
• inspect the board;
• check the TV with a sufficient level of lighting in the room, with the utmost care, as even very small cracks can cause the device to turn on and off immediately by yourself.

Trouble-shooting

Find out why the TV turns on and off immediately, you can try to fix the problem yourself.

What should be done:

• check the connection status of the antenna, router or the integrity of the power cable;
• remove the back panel and try to inspect the TV and identify malfunctions;
• pay attention to capacitors, is there any swollen among them;
• if there is experience and minimal knowledge, this problem can be solved by self-sealing cracks, then the TV will not turn on by itself;
• clean contacts from rust and dust;
• buy new items in a specialized store: capacitors, power supply (in case of damage, signs of melting or corrosion). Replace them with old ones, and perhaps your TV will begin to work normally.

If there are no specific skills and knowledge, it is better to contact a service center to conduct a professional diagnosis of the device with the elimination of all the discovered causes!

If the recommendations listed here have not yielded any results, the TV will still turn on and It turns off itself, which means that only the cause of the failure can be determined and eliminated professional master.

Contact a repair company that uses modern equipment, tools and has experienced, qualified professionals. They will determine the cause, repair your TV. It is better not to turn to private masters, as the results of their work may not be at all as expected.

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