What should I do if the LCD TV turns on the power indicator and does not turn on the machine

Possible causes and solutions for the TV not turning on and the power indicator not lighting up:

1. The power adapter of the TV is broken.

Solution: Replace the TV's power adapter.

2. The power supply circuit of the TV is abnormal.

Solution: Inspect and repair the power circuit part of the TV.

4. The set-top box is not turned on, resulting in no image and sound output on the TV.

Solution: Open the set-top box.

5. The backlight plate of the TV screen is broken or other special circumstances.

6. The screen drive circuit inside the TV has a fault caused by virtual welding.

7. The switch circuit of the AD board in the TV is burned out.

Solution:Point 5-7 above needs to be disassembled by a professional master for inspection and maintenance,If the TV is still under warranty,Send it to the TV brand repair shop to warrant。

Your TV is a broken power supply, just replace the power supply or repair, the general shop can be repaired for more than 100 yuan, the indicator light is not lit, sure that the power controller has no voltage output, the general power supply dollar problem standby or boot power indicator will be on, if the standby is not lit, then the power supply is 100% problematic, it is the problem of the power supply, but it does not rule out other problems, this needs to be checked to determine the problem, now there are more electrical power supply problems, the manufacturer deliberately designed it, It is to let users replace more TVs,Mention sales,If you have a strong ability to do it yourself, you can buy a second-hand power control board online,You can replace it for dozens of dollars,Disassemble and look at the model inside,Buy exactly the same according to the model,If you are in this case, 90% sure of the problem of the power board,You don't need to repair it, it is estimated that it won't take long to repair it, or buy a second-hand power board that has not been repaired, so that it is guaranteed,Look at the situation yourself Deal with it, No, it's okay to deal with it in an outside repair shop.

The power supply that may be supplying the whole machine may be faulty. 3. The protection circuit is started. In the event of a short circuit or leakage fault in the circuit, the protection circuit starts randomly in order to protect safety.

4. Other circuit faults. Fix the power supply, and you can see the clues. 5. The TV is in standby mode, so it can't be turned on, for example, the user mistakenly presses the [Standby] button of the TV remote control, so that the TV is in standby mode.

Suggested treatment: 1. Check the manual on how to contact the child lock. 2. You can use a multimeter to check whether the switching power supply has an output to see if the voltage is normal.

If the output voltage is abnormal, the main power supply is faulty. You can find a maintenance worker to come and repair it. 3. Contact after-sales or maintenance workers to repair faulty circuits.

4. Generally, the probability of multiple faults occurring at the same time is very small, and it is analyzed and found one by one according to the order of the main power supply, line scan, and main channel. 5. You can press the [Standby] button of the remote control to wake up the TV and return to normal. 6. Use the power button of the remote control (generally red), or press the standby button on the TV (standye), if there is no button, press the channel + - (ch+, ch-) to see if it can be turned on, if it can't be turned on, it means that there is a problem inside the TV, and you need to find after-sales service to repair.

In this case, it is recommended to check whether the power supply is plugged in first, and you can replace the socket to try. In addition, the internal components of the TV may be damaged,It may also lead to the above problems,There are also signal problems、Set-top box problems, etc. will lead to such a situation,You can troubleshoot them one by one。 The solution to the TV not turning on and the power light not lit:

The first possibility,There is a problem with the power connection,First check whether the socket connected to the TV、Whether the socket is powered,Whether it is loose and the contact is poor,Whether it can ensure that the power has been successfully connected。 The second possibility is that the power adapter of the TV is faulty and damaged, and the solution is to replace it with a new one, and you need to replace a TV power adapter. The third possibility,There is a problem with the power supply circuit at the place where the TV is turned on,The circuit cannot be turned on due to abnormal circuits,It is necessary to detect and repair the power supply circuit of the TV。

The fourth possibility is that the TV signal source is switched, and the signal source is switched to be inconsistent with the output signal of the set-top box, which will also cause this problem. Press the input signal key of the remote control to switch the signal source back to the ** signal source that is the same as the set-top box. The fifth possibility is that you forgot to turn on the set-top box, so there is no picture and sound coming out, go and check whether the set-top box is opened normally.

The sixth possibility is that the backlight plate of the TV screen is faulty and damaged, and the backlight plate needs to be repaired or replaced. The seventh possibility is that the drive circuit of the inner screen of the TV is faulty and needs to be inspected and repaired. The eighth possibility is that the circuit at the switch of the control high-voltage board on the AD board inside the TV is burned out and needs to be further inspected and replaced.

Some of the above treatment methods can be checked by individuals, and some need to ask technicians to carry out line testing, and they can be arranged according to the actual situation.

Summary. 1. The power adapter of the TV is broken.

Solution: Replace the TV's power adapter.

2. The power supply circuit of the TV is abnormal.

Solution: Inspect and repair the power circuit part of the TV. 3. The backlight plate of the TV screen is broken or other special circumstances; The screen drive circuit inside the TV has a fault caused by virtual welding; The AD board in the TV controls the high-voltage board switch part of the circuit is burned out.

What should I do if the LCD TV turns on the power indicator and does not turn on the machine

1. The power adapter of the TV is broken. Solution: Replace the power adapter of the TV.

2. The power supply circuit of the TV is abnormal. Solution: Inspect and repair the power circuit part of the TV.

3. The backlight plate of the TV screen is broken or other special circumstances; The screen drive circuit inside the TV has a fault caused by frank and simple virtual welding; The AD board in the TV controls the high-voltage board switch part of the circuit is burned out.

Does changing the power strip work?

Take a look at the fuse、No, change the power strip。

The fuse is good, the TV brand is Philips.

Plug in the power supply for 1-2 minutes, then unplug and touch the parts of the power board components with your hands that are abnormally hot, indicating that the power board is burned.

The reasons why the power light of the TV does not light up and cannot be turned on are as follows:

It could be that the TV's power adapter is broken; There is a problem with the circuit of the TV power on button; The signal source of the TV is switched, and the TV signal source is different from the set-top box signal source; The TV's set-top box is not turned on, and the TV has no sound and image output; The TV's backlight screen is damaged; There is a problem with the internal driver circuit of the TV.

The solution to the TV that can't turn on the power light and doesn't light up:

1. Replace the power adapter with a new one.

2. Check the circuit of the TV power button, and repair it when there is a problem with the circuit.

3. Use the remote control to switch the signal source of the TV to the same signal source as the set-top box.

4. Open the TV's set-top box.

5. When the TV backlight screen is damaged, it can be repaired, but when repairing, it is necessary to consider whether it is worth repairing.

6、When there is a problem with the drive circuit,To determine the specific problem,Is it a problem with the driver chip,Or a problem with the control drive,Find out the problem and deal with it in time,At the same time, we should also pay attention to the daily maintenance of the TV。

TV

Television (television, television, video) refers to a device that uses electronic technology to transmit the image and audio signals of an event, that is, a television receiver. It is also an important broadcasting and communication tool.

Television was first invented in 1925 by British engineer John Logie Baird. Television uses electricity to transmit visual images of the event in real time. Similar to movies, TV uses the visual residual effect of the human eye to show a still image with a gradual change of frames, forming a visual living image.

The TV won't turn on, and the power light won't turn on.

1. The power adapter of the TV is broken. Solution: Replace the TV's power adapter.

2. The power supply circuit of the TV is abnormal. Solution: Inspect and repair the power circuit part of the TV.

3. The TV is switched to other signal sources that are inconsistent with the ** signal output by the set-top box. Solution: Press the "Input Signal" button of the TV remote control and switch to the ** source that is consistent with the set-top box.

4. The set-top box is not turned on, resulting in no image and sound output on the TV. Solution: Open the set-top box.

5. The backlight plate of the TV screen is broken or other special circumstances. 6. The screen drive circuit inside the TV has a fault caused by virtual welding. 7. The switch circuit of the AD board in the TV is burned out.

What should I do if the LCD electric hand boy turns on the power indicator light and does not light up? Hello dear, the power adapter of Qi Xin, the TV that replaced the TV, is broken. Workaround:

Replace your TV's power adapter. The power supply circuit of the TV is abnormal. Workaround: