How does a TV power supply work?

The power supply is a part necessary for the TV to operate. It supplies the device with the electricity necessary for operation. If it is broken or defective, the device will not work. It is necessary to repair or buy a new one.

How the TV power supply works

The power supply is a source of electricity that supplies the device with current. It converts the mains voltage to the required values.

Attention! Without such a unit, the TV may fail immediately due to high voltage.

Main function

It has 3 main functions:

1. Current supply, electricity conversion.
2. Protection against supply voltage interference.
3. Maintains voltage inside the TV.

When the power supply is not working correctly

There are several malfunctions characteristic of them:

1. The fuse is blown.
2. Short circuit.
3. The device does not work, although all important parts are in working order, and there is voltage on the rectifier.
4. It is impossible to connect because the protection is triggered.
5. The transistor burned out.
6. The voltage in the circuits increases or decreases.

In the event of a breakdown, you need to do the following:

1. Turn off the TV and unplug it from the network.
2. Now you need to discharge the capacitor.
3. We remove the board from the device body.
4. We inspect the board for external damage.
5. Using a multimeter, we check the following parts: resistor, transistors, diodes and capacitor.
6. Let's look at the back of the board.We check for cracks, breakdowns and reliability of soldering.

If it is broken, then you need to understand how to repair it. The part can be taken to a service center. But, if you have basic knowledge of electronics, repairs can be done yourself. For this:

1. It must first be disassembled. Visually inspect for damage.
2. We check the quality of soldering of elements.
3. We check which places overheat during operation, and where blackening appears.
4. If the problem is unreliable soldering of the elements, you need to solder the contacts with a soldering iron.
5. If the problem occurs with heating or blackening, we need to remove the faulty part and replace it.

If such a unit breaks down, it is recommended to immediately take it to a specialist if it fails. This is due to the fact that if you make the block incorrectly, you can ruin the TV.