Why the TV itself turns on and off

Modern man 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 “favorite”, we immediately try to fix everything. Quite often the following happens: the TV turns itself on and off - the reasons for such unusual behavior of the equipment are unknown, but it is necessary to eliminate the annoying malfunction as soon as possible.

Common Causes

When the TV turns itself on and off immediately or after a short period of time, the objective reason may be as follows.

1. In the power supply can leak occurs. An experienced professional will quickly diagnose, replace capacitors.Never try to do it yourself - a capacitor may explode in your hands and cause you serious injuries.
2. Due to unstable voltage or long work can occur overheating tv. LEDs, capacitors, and the insulating winding can be damaged - the product shuts off by itself, and you can hear a very distinctive click.
3. One of the indicators glows green, the TV turns itself off if it requires program update. Only a master from a service center can download a new program and install it on TV.
4. When the LCD screen flashes, you need to check antenna connection and the density of contacts in the outlet.
5. Dust accumulation inside the case may be the reason that the TV spontaneously turns off - the contacts on the control board close. It is necessary to remove the back cover and remove the dirt on the back of the product with a vacuum cleaner. After the cleaning, the TV itself will not turn on or off. By the way, the TV remote also needs regular cleaning.
   

6. Happened inverter dysfunction - The cause may be increased humidity in the room, temperature drops, instability in the operation of capacitors.

Possible failures in the power supply unit can be reported by the following failures:

• the device does not turn on;
• the indicator on the TV works - lights up red, but the telly does not respond to remote control signal;
• You can press any button on the control panel of the product, but the product does not respond to it.

There are also other reasons because of which the TV turns off sometimes right after switching on or a few seconds after starting work, but we'll talk about it a little later.

The program is to blame

Users have registered such a strange malfunction in modern products of the new generation: the newly purchased LG TV will turn on independently at different times. By the way, Samsung or Philips TV also surprised users with their own inclusion at the most inopportune time.

The reasons for the incorrect behavior of reliable household appliances are different:

• factory smart settings;
• the user has not disconnected the software update module, the product is automatically configured according to the new data packet received from the Internet;
• on the product installed program, which gives the command - and the TV turns on itself after a while or turns off at the most interesting place of the film being watched.

When your TV turns on after-hours, you don’t need to call the wizard, try these steps yourself:

• enter the menu and uncheck self-power off;
• carefully study the recently installed programs, remove updates that are suspicious.

If after that your TV spontaneously turns on, then the problems are in a different place.

Investor Power

Quite often, the reason why the TV turns itself on is hidden in the state of the microcircuit: because of old age, microcracks form on them, the boards overheat, the equipment turns off independently. You can identify these problems yourself: unplug the product from the network, remove the back cover, take a powerful magnifying glass and explore all the chips without haste. If you find cracks - call the master, only a professionally trained specialist can correctly fix these problems.

Power surges

TV can be switched on and off due to unstable voltage in the urban electrical network - the voltage drops primarily have a negative impact on the harmonious operation of capacitors and diodes responsible for switching on and off appliances. If after turning on the TV, it worked properly at first, but then it turned off on its own, although only one minute passed, it means that there really is a problem in the capacitors. Need to take ammeter and check the voltage on the microcircuit boards, if there is no proper reaction, then you need to call the service center and call the master.

Do not try to fix such problems yourself - the replacement of capacitors and diodes is done with a low-power soldering iron. You can burn the board, and the cost of repair will instantly increase to an impressive amount.

Power Supply

Samsung tv quite often suffers from failure of the power supply unit (PSU). Excellent build quality, reliability of all technology, but engineers from South Korea have not learned how to make good power supplies.

In this case, home appliances have the following symptoms:

• the product does not respond to pressing the On / Off button on the remote control;
• the red indicator on the screen does not wink;
• TV may turn off after a short time.

Skilled craftsmen claim that 80% of power supply problems occur due to blown fuse - it becomes bloated or the contact breaks off, which can be clearly seen by visual inspection. If you have no experience with a soldering iron, then just call the center - they will send the master and he will quickly make a replacement.

From this video, a home wizard can learn useful information about identifying faulty parts, how to change them and other nuances:

You can also find out the nuances of self-repair of TVs of various brands from of 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 basic safety concepts. Loose contacts in the outlet can affect the spontaneous shutdown of smart technology - thus, the built-in security system protects the TV from overheating and malfunction.

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