The flickering phenomenon of the DVI LCD monitor after long-term use may be caused by many reasons. The following will provide several solutions:

1. Adjust the refresh rate

The refresh rate of LCD monitors is closely related to screen flickering. If the refresh rate is too low, it will cause stripes and flickering on the screen. The refresh rate should be adjusted to an appropriate range, and the general refresh rate should be between 60-75HZ.

Here's how to adjust the refresh rate:

Right-click on the desktop, select "Screen Resolution" or "Display Settings" to enter the property setting page. Find the "Display" tab in "Advanced Settings" or "Display Adapter Properties", find the "Screen Refresh Rate" option, and select the appropriate refresh rate.

2. Replace the signal cable

The signal line of the DVI liquid crystal display may be poorly connected due to long-term use or line damage, resulting in flickering. In this case, the signal line needs to be replaced for testing.

When replacing the signal line, pay attention to the quality of the signal line. The signal cable should be selected according to the interface type of the LCD monitor and graphics card. Common types of signal cables include DVI-D, DVI-I, and DVI-A, etc. Using inappropriate signal cables will further affect the display effect.

3. Replace the power supply

A power failure may also cause the screen to flicker. At this time, it is necessary to replace the power supply for a replacement test.

When replacing the power supply, you should also pay attention to whether the output power of the power supply meets the requirements of the liquid crystal display. If the power of the liquid crystal display is too large, it will cause the power supply to be overloaded, resulting in flickering. An appropriate power supply should be selected for use.

4. Adjust picture settings

In the process of using LCD monitors, you should also pay attention to reasonable picture settings. Adjusting screen brightness, contrast, color and other parameters can effectively reduce screen flickering. At the same time, you can also adjust the display in the operating system, including resolution, color depth, etc., to achieve the best display effect.

5. Check other hardware devices

When using LCD monitors, you should also pay attention to check whether other hardware devices are working normally. Such as graphics card, poor quality DVI adapter and so on. If other hardware failures exist, replacements can be made to troubleshoot.

In short, there may be many reasons for the flicker phenomenon after long-term use of DVI LCD monitors, which need to be checked one by one. You should choose according to your own situation and find the most suitable solution to achieve the best display effect.