Monitor, can t be displayed, otherwise normal 20

The landlord believes that the judgment that "indicates that the signal and power supply are normal" is accurate;

The monitor is on for 1 to 2 seconds and then the screen goes black, the main reasons are:

1. The high-voltage board, including its power supply circuit, is faulty;

2. Backlight circuit failure, such as damage to a backlight tube, or oxidation and rust on the pins, or disconnection of the wiring;

3. The AD driver board is faulty;

If you can see the "display" of the screen in bright light (or when squinting), the fault belongs to section 1, otherwise it belongs to section 3.

Hello. Seeing your description below, I have a suggestion.

You can get close to the monitor when the screen is black to see if there are any images inside. (If you faintly see the image inside, but the backlight is not bright, it means that the high-voltage board is not working.) If there is nothing in it, it means that the main chip is not outputting any signal normally, that is, it is not working)

If you can't see anything when the screen goes black, my analysis is like this:

It has nothing to do with the high-voltage board, you press it 5 to n times before it is normal, every time you press the switch, the main chip will do a restart action, send a command to the backlight, and send a signal to the screen. However, the backlight is only flashed and black, and the signal is only sent once, indicating that the main chip just moved, and there was no movement immediately, which may be related to the power supply to the main chip on the driver board is a little loaded. You can check the voltage on the lower driver board.

Whether the voltage of each group is low, it may also be that there is a problem with the 5V sent by the power board.

If you can see ** in it when the screen is black, it means that it is a problem with the high-pressure plate.

Is your monitor LCD? Or CRT's?

1》Turn up the brightness and see what the effect is.

2》Check whether the panel touch button is invalid or leakage.

After restarting, it will still light up for 1 second or for a longer time from time to time.

Graphics card issues! Please check the hardware.

There may be some netizens who don't know much about the situation that part of the display is not displayed, so let me introduce you to the solution to the problem that part of the display is not displayed, I hope it can help you!

Solution 1 for a part of the display not to be displayed:

1.The reason may be that the internal power board filter capacitor or the high-voltage board transformer is damaged, resulting in insufficient power supply, and after a period of time after turning on the machine, it will be normal due to the preheating of the components, and sometimes it needs to be turned on several times before it can be turned on.

2.The maintenance method is to open the shell, check if there is a capacitor explosion inside, and replace it after finding it.

3.If you don't know how to repair it, take it for maintenance, repair about 50 yuan, change the board for more than 100 yuan Answer: If the display indicator is still on when the screen is black, it should not be a problem with the system settings, it may be a problem with the internal power module of the display, and if the problem is serious, it should be repaired.

This kind of problem is caused by the cold cathode fluorescent lamp in the liquid crystal display is broken, the life of the cold cathode fluorescent lamp in the general LCD display is different with different brands, the average life span is 1 and a half years, it is recommended that you find a dealer or manufacturer to replace the fluorescent lamp, and do not replace it yourself.

This is caused by the ignition of the high-pressure bar, just change the high-pressure bar!

Solution 2 for a part of the display not to be displayed

Right-click the desktop and choose Properties from the shortcut menu that pops up.

Then, in the Display Properties dialog box, switch to the Settings tab.

Find "Screen Resolution" under the display, move the slider left and right to adjust the appropriate resolution of the display, adjust to the left to indicate a decrease in resolution, and to the right to increase the resolution, increasing the resolution will make the word smaller.

Then click the "Apply" button and the resolution will take effect.

Sometimes our monitor doesn't show it, what's going on? Let me give you a brief introduction and solution, I hope it can help you!

Analysis:

1.If the graphics card is confirmed to be fine, *** the machine with a separate display is best judged***, then you can rule it out.

2.Unplug any cable of the hard drive, and the power supply data can be turned on. If there is a display output, see which part of the POST is wrong. Once solved, plug in the hard drive.

3.There is no problem in determining the line.

4.Determine the interface of the graphics card, there is no problem with the interface of the display.

5.Change to a memory slot.

6.If your monitor is fine, but it won't light up, there may be a problem with some hardware, and you can use the elimination method to troubleshoot them one by one.

7.If it still doesn't work, discharge the motherboard battery and try again.

Workaround for the display not showing:

Wiring line problems and solutions:

1. First of all, check whether there is a problem with the wiring cable, whether the connection is loose, or the connection cable is not in good contact.

2. Update the cable.

Memory bar problems and solutions:

Motherboard Electrostatic Reaction Solution:

Motherboard Problems and Solutions:

1. For the problem of motherboard, professionals need to test it, do not disassemble it privately, otherwise you will bear the consequences.

Seen""of people also:

1.A list of monitor failures.

2.What should I do if the display screen does not display after the computer is turned on.

3.A complete set of skills for judging the cause of the failure of the "black screen" of the display.

4.What should I do if the black screen of the computer boot display cannot be displayed?

5.Reasons for the black screen of the computer boot monitor and troubleshooting.

6.What should I do if the display resolution does not have 1440x900.

Yes, the monitor screen resolution is set incorrectly.

Solution: 1. Right-click on the blank space of the desktop - select the screen resolution.

2. Click on the right side of the resolution, and then adjust - OK.

3. The LCD screen resolution is usually set to recommended, the ordinary display is set to 1024*768, and the refresh rate is 75-85.

Cause 1: The monitor resolution is set incorrectly. It can be set to 1024*800 1440*1024 according to the actual screen size of your monitor. Let's see if there's still a problem after resetting.

Reason 2: Graphics card issues. Use the driver wizard to update the graphics card driver, and then reboot.

Reason 3: There is a problem with the monitor screen. Try replacing the monitor.

This situation is basically caused by resolution, there are several buttons below your monitor, one of which is automatically adjusted, and it will be reflected when you press it. Right-click, click Properties, Settings, there are various screen resolutions, try a few times for yourself, find the one that best suits your screen and eyes.

You're widescreen, right? There are two modes for the monitor to be adjusted up: 16:9 10 (widescreen mode) and 4:3 (front screen mode), you just need to turn it back to 16:9 10.

Are the buttons on the monitor adjusted?

I don't know if the resolution is set?

If all of the above is done, it is probably a display problem.

There may be some netizens who don't know much about the situation that part of the display is not displayed, so let me introduce you to the solution to the problem that part of the display is not displayed, I hope it can help you!

Solution 1 for a part of the display not to be displayed:

1.The reason may be that the internal power board filter capacitor or the high-voltage board transformer is damaged, resulting in insufficient power supply, and after a period of power-on, due to the preheating of the components, it will be normal, and sometimes it needs to be turned on several times before it can be turned on.

2.The maintenance method is to open the shell, check if there is a capacitor explosion inside, and replace it after finding it.

3.If you don't know how to repair it, take it for maintenance, repair about 50 yuan, change the board for more than 100 yuanAnswer: If the display indicator is still on when the screen is black, it should not be a problem with the system setting, it may be a problem with the internal power module of the display, and if the problem is serious, it should be repaired.

This kind of problem is caused by the cold cathode fluorescent lamp in the liquid crystal display is broken, the life of the cold cathode fluorescent lamp in the general LCD display is different with different brands, the average life span is 1 and a half years, it is recommended that you find a dealer or manufacturer to replace the fluorescent lamp, and do not replace it yourself.

This is caused by the ignition of the high-pressure bar, just change the high-pressure bar!

Solution 2 for a part of the display not to be displayed

Right-click on the desktop and select "Properties" from the pop-up shortcut menu.

Then, in the Display Properties dialog box, switch to the Settings tab.

Find the "screen resolution" under the display, and move the slider left and right to adjust the appropriate resolution of the display, to the left to indicate that the resolution is reduced, and to the right is to increase the resolution, and to the right is to increase the resolution, increasing the resolution will make the word smaller.

Then click the "Apply" button, and the resolution will take effect.