How does the desktop computer screen always flicker?

First, the computer just opened the screen of the monitor shaking very badly, sometimes even the icon and text can not see clearly, but after one or two minutes will return to normal. This phenomenon occurs more in humid weather, is the cause of damp inside the monitor.

Solution: To completely solve this problem, you can use the food packaging moisture-proof sand thread string up, and then open the rear cover of the monitor, the moisture-proof sand hanging in the image of the tube neck near the tube seat near the tail. In this way, even in humid weather, there will be no more "problems".

Second, your power supply is not stable, thermal performance or anti-jamming performance, resulting in output voltage ripple too large, so that the graphics card is in the state of not working, resulting in screen flicker, this kind of problem most of the thermal performance is not good.

Solution: Turn on the power to replace its switch tube, filter capacitor, or directly change the power supply.

Third, the display of poor performance, resulting in high pressure, screen too bright to white into a, brightness potentiometer oxidation, resistance to small or bad contact, the fault of the circuit led to the display CPT high voltage or low cathode voltage, will cause this computer screen flashing phenomenon, In particular, the initial phenomenon is very similar to your present problem.

Solution: power-on, such as screen flashing phenomenon, slapping the monitor to see whether the phenomenon has been aggravated (stop after the phenomenon, do not use too much strength). Increase the display of the problem, more than the site is caused by poor contact, need to find a professional repair, no is not the problem here.

Four, video card interface is bad, the thermal performance of the graphics card is not good, there is no contact with the monitor connection.

Solution: 1, unplug the video card, check the interface is rust, with anhydrous alcohol wiped clean, while slightly the shrapnel up some. 2, such as the phenomenon immediately after the shutdown, with cotton gloves or cotton cloth unplug the video card, with hand test whether the chip is overheating (usually slightly warm), overheating for the fan, or for chips, graphics cards. 3, the use of multimeter electrical blocking r*1k to test whether the monitor connection is good, the test to shake the line, its bad probability is small.