Periodically, almost all users of TV technician faced with the fact that the TV is turned on and off himself. But there are cases, and turns off right while watching a movie or your favorite TV series. Therefore, many wonder why the TV is turned off by itself and what to do, because it is uncomfortable.
This behavior can cause equipment malfunction of the internal parts or external factors.
By disabling causes spontaneous breakage outlet. Perhaps the plug from the set-top box is loosely fitted to the outlet, making it on and off. In addition to these problems, there are also other factors:
- failure of the remote control;
- voltage drops in the network;
- dust or moisture into the housing;
- Wear extension.
User actions are sometimes the cause of self turn off the TV, such as the sleep timer.
internal
For such inconveniences can lead to:
- blowing the power supply;
- damage to the inverter;
- failures in the software;
- sticking to the body the power button.
Diagnostics and Troubleshooting
If the TV is constantly began spontaneously disabled and enabled, not necessarily immediately contact the service center. Diagnose and eliminate some of the problems you can and at home.
sleep timer
The reason that the TV is turned on and off almost immediately can be included sleep timer. Basically failure associated with resetting the system date to the time. This is due to power surges or outages. Switch off timer can be in TV settings in the "System" under "Time".
Also, the problem may occur because of the children to play with the remote control or due to wrongly exposed settings.
Defective control
On the remote can get stuck buttons, why he would spontaneously give commands TV. To make sure that the problem is in the remote control - Remove him from the room, where there is a TV set. If the TV is working properly, the problem is remote.
To fix this problem you need to clean the remote control - and dismantle it, remove the dust from the chip debris. Then, if the problem persists, it is necessary to replace the remote control.
Power socket
Problems associated socket may be several:
- Loosely inserted into the socket power plug can cause a sudden turn off the TV. The device does not have enough energy and it goes into protection mode.
- Violation of the integrity of the cable also leads to overheating of the unit and turn off after a while. This problem is more serious because it can cause a short circuit.
- May be faulty socket itself. To identify the problem, turn the unit into another power source. Also, check the voltage supply can be a multimeter.
voltage drops
Unstable voltage often causes serious damage to equipment and TVs are no exception. Due to power surges can burn diodes or capacitors in the power supply circuit.
With frequent drops in the mains filter technique can secure the protection against voltage surges, or uninterruptible power. This applies to both television receiver and the other devices in the house.
software failures
Outdated versions of software may cause the TV off during loading update will solve the problem. In the case where the disconnected model with Smart-TV need to check the installed applications and remove questionable.
If the auto-update feature is enabled, the installation of a new version of the software configuration may lose TV receiver, why it will start automatically disconnected after some time. You can fix this by removing the check mark from the Auto Off in the TV menu.
It happens that the device arbitrarily switched on and off at night - it is connected with the search for updates. Therefore, if this prevents the need to disable the auto-update. But it is necessary to include a couple of times a month to check for fresh software.
Power Supply
The failed power supply can also cause the TV off. You can diagnose the problem by the fact that:
- Power indicator does not light;
- the device is switched off almost immediately after turning on;
- TV does not respond to the supply switching command from the remote control or control panel.
Often the power supply fuse blows due to power surges. Determine such damage can be in appearance details - blown fuse is covered with swellings or fumes.
In the absence of experience in soldering for such repairs is better to contact the service center.
inverter
To shut down an independent television receiver after a few minutes of work can cause disruptions in the inverter. Due to power surges, mechanical action, elevated temperatures, or moisture on the board cracks - and they become a cause of failure of the inverter. Repair the item will only professional wizard.
Dust and moisture
Accumulated dust can also cause unauthorized turn on or off the TV. When dust is accumulated on chips layer there is static pressure, which leads to a short circuit.
To avoid such problems regularly take care of the machine. To remove dust need to be removed to remove the back cover of the device and clean the board with a vacuum cleaner. It is not necessary to touch them with a brush, it will be enough just to bring it to a close distance.
But the ingress of moisture into the housing causes the corrosion of contacts on the board, which can be self-cleaned only with experience.
prevention
Any problem is easier to prevent than to fix. To extend the life of the TV, observe the following rules:
- Regularly wash the dust from the screen and casing.
- Make sure that the room TV had a normal humidity.
- Do not install questionable programs.
- Updated periodically.
- Avoid dropping or other mechanical influences on the TV.
Basically eliminate the cause of the spontaneous off the receiver box can be their own. Most often the problem is the remote control failure or a software update. Therefore, when working with the technique, be careful and do not neglect the rules of operation.
