The Great Wall display turns on and off, which part is broken?

Hello. Is it normal for the indicator light to be black when the monitor screen is black?

If it is, it should be that the high-voltage board of the display is not output, so the backlight tube of the display is not lit, so it looks like a black screen (look close to the monitor, there should be an image inside), it is recommended to send it to the repair shop to overhaul the high-voltage board. Generally, it costs dozens of dollars to repair high-pressure plates. If you change it, it's about 50.

If the indicator light is also black, then it is necessary to analyze the power part. It may be a problem with the power strip, and if you send it to a repair shop for repair, it is estimated that it will be about 50.

It's hard to say something for five years, it may be that there is a problem with the capacitors inside, I didn't see the machine, I don't dare to talk nonsense, don't repair it if the maintenance fee is more than 80, and it's not expensive to buy a new one.

Is it a CRT monitor? It may be which component is aging. If it's CRT, it's not worth much, so it's recommended to buy a night crystal.

It may be a problem with the power strip, and it is estimated that it will cost 150 yuan to repair it. It can also be dried with a hair dryer or in the sun.

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That's a problem with the high-voltage board inside,The general display is controlled by it to control the brightness and backlight,If you want to repair it, it's only a dozen,But it's not too much to replace it with a new one after five years.。

If the screen is just on and off when the BIOS is near, the screen should not be broken, which depends on other periods, such as whether it will be the case after entering the system normally.

At the time of booting, including when entering the BIOS, due to the phased output of the graphics card with different resolution signals, the output refresh rate is also low, and some displays take a longer time to re-identify the signal when the image is converted, which causes it to turn off and then turn on, as long as it is not very long, it is a normal phenomenon. That's not the case after entering the system.

Supplement: If the system is running, please try to change the monitor to see, if there is still this phenomenon, saying that the output gain of the card is obviously not enough, replacing the low-power graphics card or increasing the power supply to more than 300W (rated) may solve the problem. There is also the possibility that there is a display-related chip failure on the motherboard, which can only be determined after other troubleshooting.

The power supply is not enough, just change the wattage to a higher one

Send down your configuration and power.

If the monitor does not flash after entering the system, it means that it has nothing to do with the monitor.

This is complicated ...

I've had.,Open the case and unplug the motherboard battery.,It's absolutely good to replug all the interfaces.,Sometimes it's good to be yourself.,I've encountered a lot.。。。 I don't know why...