How to repair the computer monitor correctly when there is a problem? PHP editor Youzi has sorted out common monitor failure problems for everyone. Starting from symptoms such as no display, blurry screen, flickering, etc., he will conduct an in-depth analysis of the causes and provide specific repair methods.
If you want to repair your computer monitor yourself, here are some common repair steps, but please note that these steps require certain technical knowledge and operating experience. If you are unsure or unfamiliar, seek professional help to avoid further damage.
1. Check the power connection: Make sure the monitor's power plug is correctly connected to the outlet and the monitor's power switch is on. You also need to check that the cable is securely connected to the port on your computer.
2. Adjust brightness and contrast: In the monitor menu, try adjusting the brightness and contrast settings. This can resolve some display issues, such as an overly bright or dark screen.
3. Check the signal connection: Make sure the monitor is properly connected to the computer, and check whether the video cable or HDMI cable is loose or damaged. Try re-plugging and unplugging the connection port to ensure normal signal transmission.
4. Check the monitor settings: Enter the monitor menu and check the setting options, such as resolution, refresh rate, etc. Make sure the settings are compatible with your computer's and adjust them as needed.
5. Find dead pixels: Check the display screen for dead pixels. You can use a professional dead pixel detection tool or open a full-screen white and black image to observe whether there are obvious bright or dark spots.
6. Seek professional help: If the above steps cannot solve the problem, you may need to seek help from a professional repairman. They will have deeper technical knowledge and specialized tools to diagnose and repair more complex problems, such as faulty wiring or damaged LCD screens.
In short, repairing your monitor requires caution and professional skills. If you are unsure or unfamiliar with certain procedures, consult a professional or have your monitor serviced.
Reconnect the VGA cable and read step by step
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The monitor does not light up. The first thing to consider is that the VGA cable is in poor contact. You can try to unplug the screen connection cable behind the screen and the main chassis and reconnect it.
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The blue one behind the case is the screen cable.
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If that doesn’t work, you can try the second interface.
Clean the memory module
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Remove the screws (usually two) on the back of the computer host and remove the side chassis panel.
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Open the case and you will see two card slots next to the fan. Pull out the cards on both sides of the memory module and take out the memory module.
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Wipe the metal piece of the memory module with a soft cloth to remove the dust in the card slot, and then put the memory module back as it is.
If there is a problem with the computer monitor cable, you can try the following methods for repair:
1. Check the cable plug: First, check whether the cable plug is firmly connected to the monitor and computer. If the plug is loose or has poor contact, you can Try plugging it in again.
2. Replace the cable: If the cable itself is damaged or aged, you can try to replace the cable. It should be noted that you should choose a cable that is suitable for your computer and monitor. The connectors should be plugged tightly and do not use a cable that is too long or too short.
3. Clean the cable socket: If there is dust or debris on the cable socket, it will also affect the normal use of the monitor. You need to use a cotton swab or a hair dryer to clean the cable socket.
4. Adjust the monitor resolution: If the monitor resolution is set improperly, it will also cause wiring problems. You can try adjusting the monitor resolution to see if the problem can be solved.
5. Replace the monitor: If none of the above methods can solve the problem, the monitor itself may be faulty and a new monitor needs to be replaced.
It should be noted that when performing cable repairs, the power supply must be disconnected first to avoid accidents. In addition, if you do not have sufficient repair experience and skills, it is best to ask professionals to perform repairs to avoid causing greater damage.
1. The display is not working and the processor is working properly
1. The display is not powered; Solution: Check whether the power supply is normal; 2. The Maipu Guangcai display network cable is not connected properly; Solution: Check and reconnect the network cable; 3. The receiving card has no power supply or the power supply voltage is too low; Solution: Make sure the DC output power supply of the power supply has 5V voltage
2. The display does not work and the processor has no input signal failure;
1. The DVI or HDMI cable is not connected properly; Solution: Check whether the DVI or HDMI cable connector is in close contact; 2. The copy or expansion mode is not set in the graphics card control panel; Solution: Reset the copy mode or expansion mode; 3. The input signal source is selected incorrectly; Solution: Correctly set it in the processor Set the corresponding signal source
3. Troubleshooting of full-screen pixelation and picture and shadow button movement
1. The network cable or DVI/HDMI cable connecting the computer and the screen is too long; Solution: shorten the network cable and DVI/HDMI length; 2. The DVI/HDMI cable connecting the computer and the processor is damaged; Solution: Replace it; 3. Computer Graphics card driver failure; Solution: Reinstall the graphics card driver or replace it;
4. Each display unit of the entire display shows the same content failure
1. The display connection file parameters are not sent; Solution: Reset the screen connection file parameters
5. The brightness of the display screen is very low and the display image is blurred;
1. The processor program is wrong; Solution: Set the minimum brightness value of Maipu Guangcai display monitor to above 80;
6. The whole screen shakes or resets Video failure
1. Check the communication cable between the computer and the large screen; Solution: Re-plug or replace the communication cable; 2. Check the DVI/HDMI cable of the processor; Solution: Re-plug the DVI/HDMI cable to reinforce it; 3 , Processor troubleshooting: Restart the machine
There may be three aspects to judge:
1. Graphics card problem
(re-insert it, clean the gold finger, whether the fan is normal.
Update the driver, you can download the driver wizard.
If it still doesn’t work, ask for a free replacement during the warranty period )
2. Cable problem (re-plug, check the vga or dvi interface
3. Monitor problem (check whether the electrical socket is powered. If convenient, connect it to another computer to see if it is normal)
If it still doesn’t work, one-click restoration .If you do not prepare a system CD, the CD-ROM drive can be used. Start the computer and press the del key, set it to CD boot in the bios, insert the system disk and then restart. It is basically completed automatically according to the steps.
If it still doesn’t work, check if the system is free of viruses. Just It may be a heat dissipation problem. After using it for a long time, you can open the case and carefully clean the dust inside, and add a little high-grade engine oil to the fan. The main problem is to reduce the temperature inside the case.
1. Check whether the picture tube is aging. For ordinary maintenance personnel, due to the lack of special equipment, they can only use indirect methods.
2. Use a high-voltage meter to directly measure the anode high voltage. If there is no high-voltage meter, it is absolutely impossible. You cannot use a multimeter to directly measure the anode high voltage. Commonly used methods are:
When powering up the monitor, listen for obvious high-voltage charging sounds from the deflection coil. If there is, generally high voltage will not cause much of a problem:
A black circle on a monitor is usually caused by leakage from the display, and it needs to be repaired by an after-sales or professional repairman. The monitor (display) is also called the monitor. Device, that is, input and output device. It is a display tool that displays certain electronic files on the screen through a specific transmission device and then reflects it to the human eye. The LCD is a flat, ultra-thin display device, which consists of a certain number of devices. It is composed of color or black and white pixels and is placed in front of a light source or reflective surface. Therefore, it is very popular among engineers and is suitable for electronic devices that use batteries. Its main principle is to stimulate liquid crystal molecules to produce dots, lines, etc.
1. Check whether the display refresh rate is set correctly by right-clicking on a blank area of our computer desktop---Properties--Settings-- Advanced ---Monitor.
You can see that the refresh frequency of the monitor is set to "60", which is the reason why the monitor screen keeps shaking. Set the new frequency to "75" or above, and then click OK to return to the desktop.
How to deal with computer monitor splash screen
How to deal with computer monitor splash screen
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2. Check whether the graphics card driver is correct. Sometimes when we enter the computer monitor refresh rate, we find that there is no refresh frequency to choose from. , this is caused by the driver of the front graphics card being incorrect or too old.
How to deal with the splash screen of the computer monitor
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3. Check whether there is any interference around the computer monitor. Interference and magnetic field interference can easily cause the computer screen to shake or flicker. The way to eliminate it is to place the computer in another open place and observe it again. You can also go to another place to get a good computer to test and eliminate it. Try not to bring the monitor close to it. Nearby large electrical products. You can also restart the computer monitor and take a look. Generally, current monitors have an automatic degaussing function during the startup process.
How to deal with computer monitor splash screen
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4. Monitor hardware problem or power supply problem. The above situations are relatively rare. The most common ones are hardware problems, such as insufficient data cables connecting the monitor and the host. Everyone can solve the problem by replacing and troubleshooting. In addition, the monitor power supply will only focus on the troubleshooting objects. When encountering Among computer screen jitters and computer screen flickering problems, the most common cause of computer screen flickering is monitor power supply problems, and many are caused by monitor aging or monitor failure.
If the screen can be used normally again after turning on the screen (white screen on startup), it can be roughly determined that the backlight "ON/OFF" control circuit of the LCD monitor is out of control. One is a problem with the LCD driver board, and the other is a problem with the high-voltage board. The market prices of these two boards are not expensive, and repairs within 80 yuan are reasonable.
If the computer monitor leaks, it is worthless to repair. Just replace it with a new one. Although the leakage is small at first, the leakage area will become larger and larger, affecting you. It has been used normally, and there is a risk of short circuit or spontaneous combustion in the monitor after a long time, and the current monitors are not expensive (except for high-end ones), so if the monitor leaks, replace it
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