Why did the TV stop turning on

Breakdowns of TV sets, as well as of any electronics, can be caused by various reasons, to get to the bottom of which is sometimes difficult. Both new and used devices for a long time are subject to failures. For example, trying to turn on the TV receiver, you see the flashing lights, you hear a click, but the TV still does not turn on and does not work. Different models of devices may have their own “symptoms”. The reasons why the TV does not work can actually be many.

Flashing lights

Many modern models of television receivers have self-test function. Before starting the device, the CPU checks all nodes and modules of the device for health. When a breakdown is detected, the processor blocks the turn on and sends a signal with a fault code to the LED (the indicator flashes a certain number of times). If you notice that the Sony or Phillips TV set, the Rubin TV set, and the Supra or Thompson LEDs are flashing on the TV, this means that it carries out a self-diagnosis, and after a while will give the cause of the breakdown. The red indicator flashes a certain number of times, and you can decipher these signals by looking at the device instructions, where all the trouble codes are listed, and what they mean.

Similar symptoms also appear when an LCD TV is connected to a computer. as monitor. If the PC is turned off or in sleep mode, then when you try to press the “ON” button on the remote control, the LCD TV will blink on the indicator several times.

The flashing of the LEDs on the Sony TV may be caused software failure device or problem in the motherboard. But first it is recommended to try reflash the unit. If this does not help, and the TV continues to not respond to pressing the power button, then the problem is in the motherboard. If the Sharp TV does not turn on, while the sensors can light up alternately (red - 2 times, then green - 3 times), then this indicates the need to replace the backlight inverter.

Constant light indicator

When the indicator is on without flashing, it means that the power supply is receiving voltage. But when the TV does not turn off from the control panel, try to turn it on with a button located on the case of the device. Perhaps the reason is lurking in the console.

1. First of all, when the TV set stopped turning on from the remote control, it is necessary to change the batteries in it, and if oxidation of the contacts was noticed, clean them.
2. After that, check if the infrared emitter of the console is broken, as this may cause the TV to not turn on.
3. It is also recommended to check the buttons for sticking. Experts advise from time to time disassemble the remote and clean it from dirt. Dust may collect under the keys, and this is a common reason that the remote control TV does not turn on.
4. If the unit does not turn on after the remote control has been filled with any liquid - the latter is easier to replace with a new one.

When the TV Samsung, sharp, or philips could not turn on from the panel, but the indicator is lit evenly, it may indicate software failure TV or electronics - there was a fault in the motherboard. This will require a diagnosis of the unit in the service center. In the Supra TV with a constantly burning red light, but the absence of inclusion, the cause is most often the defective electrolytes in the PSU.

TV beeps

There are cases when the TV beeps when turned on. When the whistle appears for a short time after switching on, this indicates a faulty power supply unit (power supply unit). Capacitors that have lost capacity may cause such a sound. After some time of operation, the sound can become constant, which is a sign of an imminent breakdown of the PSU.

If the LG TV does not turn on and at the same time begins to squeak, then a more serious repair of the unit is required. This trouble can visit and TV BBK, Sharp, Bravia, as well as Toshiba. The whistle may then be caused by the load in the secondary circuits due to:

• burned down transistor;
• closed capacitors;
• broken line chip.

When kinescope machine, for example, the TV Vityaz or Rubin, often beeps TDKS because of a cracked case. This can happen during prolonged operation of the unit. The sound is caused by the discharge of high-voltage discharge to neighboring elements. If replacing TDX is problematic, then you can try to fill the problem area with epoxy-based glue.

On the TV, Horizon can whistle a kinescope with a poorly attached suction cup, due to dust accumulated under it.

Sharp 54CS-03S Transistor

TV does not turn on for a long time

Philips TV after some time of operation may not start up the first time. It takes 3-4 minutes to switch on the TV, and attempts can be from 10 or more. At the same time, as soon as the image begins to appear on the screen, it makes a click and the shutdown occurs. Such symptoms are also found in Sharp, Thomson, Rubin and Daewoo machines. When the TV clicks and does not turn on, it says power supply capacitor faults. After turning on the power, due to insufficient capacity of electrolytes, BP Phillips goes into protection.

The device is locked after switching on

The picture of the lock can often be seen on a Toshiba TV, and it does not matter if it is an LCD or plasma TV. This happens as follows: after 3–4 seconds, the switched on unit goes off and locks, and a circle starts to burn in the upper left corner, and the TV does not show. To solve the problem of why the TV does not turn on, you must first measure the voltage on the system board. If the indicators are normal, it remains only to make flashing software.

TV receiver freezes

Including the television receiver, you can see the splash screen on the screen. SmartTVwhile the indicator blinks 5-6 times and the device “freezes”. After that, the Samsung TV does not turn on either from the remote or from the panel. The response is only when you press the shutdown button on the remote control (the red indicator flashes), but the telly does not even think about turning off. What to do? Then the only thing you can do is de-energize the unit.

Sometimes it does not show the TV due to a failure in the software shell - it will need to be reflashed in the service center. In rare cases, such symptoms may occur when the CPU fails, or rather, its memory module.

The unit spontaneously turns off or on

This strange behavior was observed in Rubin tele telephones.The device may spontaneously stop working after a certain period of time. Or vice versa, the TV is turned on without any participation. The reason for shutting down the device may be power failure board. It is also impossible to exclude the failure of the control board. Spontaneous inclusion of the television set Rubin, can be:

• at an unsuitable power board;
• when closing contacts under the keys on the remote control;
• locking buttons on the TV panel.

Sharp TV sets also turn on spontaneously, after which it turns off and the indicator starts flashing red. Breakdown is the same - power supply or power board.

Most of these faults, except repair console or replace it, as well as checking the power cord, should be eliminated by qualified professionals. To do this, they have the necessary knowledge, tools and diagnostic equipment. To learn more about other self-eliminating TV malfunctions, you can from our article on TV repair.