According to the author's experience, the external manifestations of common glitch on the display are mainly the following: black screen, flower screen, no signal, blur, water ripple. In the following article, the author will explain in detail the possible causes and solutions of these faults.
Everyone knows that the display takes a long time, and all kinds of small problems will follow. Experts believe that it is actually very simple to solve these small problems. You can see the fault with a pair of eyes.
Common fault one: monitor flower screen.
This problem is caused by the graphics card. If it is a newly changed graphics card, it may be that the card quality is not good or incompatible, and then there is no correct driver installed. If the old card is added with video memory, it may be caused by the newly added video memory and the original memory model parameters.
Common fault 2: The screen of the monitor is very shaken when the computer is turned on. Sometimes even the icons and texts are not clear, but it will return to normal after a minute or two.
This phenomenon occurs mostly in wet weather and is caused by moisture inside the monitor. To completely solve this problem, use the moisture-proof sand in the food packaging to string together with the cotton thread, then open the back cover of the display and hang the moisture-proof sand near the neck of the tube tube near the tube seat. In this way, even in wet weather, the above “faults” will not occur again.
Common fault three: After the computer is turned on, the monitor only smells its sound and is dark. It takes a few tens of minutes to appear.
This is caused by leakage of the display tube socket and the tube holder must be replaced. Disassemble the back cover to see a small circuit board at the end of the tube, and the tube holder is soldered to the board
. Carefully unplug the board, solder the header, go back to the electronics store and buy the same header, then solder the header back to the board. At this time, don't rush to put the board back. You should first find a small piece of sandpaper. Carefully wipe the pins protruding from the rear of the tube with a sandpaper. In particular, pay attention to the oxide layer on the pin. If it is not cleaned, the old disease will recur. Put the board back and you're done.
Common Faults 4: There are always lingering clutter or lines on the monitor screen, and there are also annoying noises in the speakers.
This phenomenon is mostly caused by poor anti-interference of the power supply. If you are too lazy to do so, you can replace it with a new one. If you have enough hands-on ability, you can try to replace the filter capacitor inside the power supply. This can often work. If the effect is not obvious, you can replace the switch tube.
Common fault five: The display is black.
If there is no signal transmitted to the display due to damage to the graphics card or display disconnection, the indicator light of the display will flash continuously to indicate that no signal is received. If the resolution is set too high, a black screen will appear if the resolution exceeds the maximum resolution of the display. If the display is destroyed, the current display has a protection function that automatically protects when the resolution exceeds the set value. In addition, hardware conflicts can also cause black screens.
There are many common faults in the display. Some faults involve the internal circuits and components of the monitor. We can't get it by ourselves. We can only send it to the repair station and get it by professionals. However, there are still some faults, which are caused only by the display settings or external accessories. This part of the fault can only be easily handled by a few operations or by changing a small accessory.