Maintenance tips for common malfunction of display

Computer monitors for a long time, a variety of small problems will follow. Experts believe that to solve the small problems is actually very simple, with a pair of eyes and patience to troubleshoot the problem can be identified. This article is mainly for the display of common fault maintenance skills Daquan for everyone to explain, I hope you like!

Computer Failure Repair Daquan: The maintenance skills of the common malfunction of the monitor

Common fault One: the computer just when the screen is shaking very badly, and sometimes even icons and text can not be seen, but after one or two minutes will return to normal.

This phenomenon occurs mostly in humid weather, which is the cause of damp inside the monitor. To completely solve this problem, you can use the moisture-proof sand in the food packaging string up, and then open the rear cover of the display, the moisture-proof sand hanging in the image tube neck near the end of the tube seat. In this way, even in wet weather, there will be no more "trouble".

Common trouble Two: After the computer is turned on, the monitor only hears its picture, the black one. You'll have to wait a few 10 minutes for the screen to appear.

This is caused by the leakage of the apparent tube seat, and the tube seat must be replaced. Open the back cover to see a small circuit board at the end of the image tube, the tube seat is welded to the circuit board

On Carefully unplug the circuit board, then weld the headers, buy back the same headers from the electronics store, and weld the headers back to the board. At this time do not rush to put the circuit board back, to find a small piece of sandpaper, very carefully to the end of the image tube protruding pin with sandpaper wipe clean. In particular, pay attention to the oxidation layer on the pin, if the rub is not clean quickly will relapse. Put the circuit board back and you're done.

Common trouble Three: the monitor screen always has lingering interference clutter or lines, and the speaker also has annoying noises.

This phenomenon is mostly caused by the poor interference resistance of the power supply. If you do not bother, you can replace a new power supply. If you have enough hands-on ability, you can also try to replace the power supply filter capacitor, which often works, if the effect is not too obvious, you can exchange the switch tube.

Common trouble four: Display splash screen.

This problem is mostly caused by the graphics card. If it is a new video card, it may be bad or incompatible card quality, then there is not yet installed the correct driver. If the memory is added to the old card, it is possible that the newly added video memory and the original video memory model parameters are caused.

Common failure Five: monitor black screen.

If the video card is damaged or the monitor is disconnected, and so on, no signal is transmitted to the monitor, the indicator light of the monitor flashes continuously indicating that no signal is received. If the resolution is set too high, more than the maximum resolution of the monitor will also appear black screen, the heavy destruction of the display, but now the display has a protection function, when the resolution exceeds the set value will be automatically protected. In addition, hardware conflicts can cause a black screen.

Cause of monitor jitter

The display refresh rate is set too low

When the display refresh frequency set below 75Hz, the screen will often appear jitter, flashing, the refresh rate is properly adjusted, such as set to higher than 85Hz, the phenomenon of screen jitter generally no longer appear.

The power transformer is too close to the monitor and chassis.

A power transformer can cause large electromagnetic interference when it is operating, which causes screen jitter. Put the power transformers away from the chassis and monitor to get the problem solved.

Poor power or power supply is aging

Many of the computer power used by the components of the work, materials are very poor, easy to cause the computer circuit is not smooth or power supply ability to keep up, when the system is busy, the display will appear in particular screen jitter phenomenon. When a computer's power supply starts to age, it can also cause the same problem.

The speaker is placed too close to the monitor

The magnetic field effect of the speaker interferes with the normal operation of the monitor, causing the display to generate screen jitter and string-color magnetic interference.

Virus Mischief

Some computer viruses can disturb the display of the screen, such as: character inversion, screen jitter, graphical flip display. Screen jitter scripts, which are ubiquitous on the web, are enough to make your head as big as a bull after the middle strokes.

Bad contact on the display card

After reseating the display card, the fault can be excluded.

WIN95/98 system post-write cache caused

If this is the case, disabling all drive post-write caches in the Control Panel-system-performance-File System-Troubleshooter will allow the issue to be resolved fundamentally.

Damage to power filter capacitance

Open the chassis, if you see the Power filter capacitor (the largest capacitor on the board) the top of the bulge, then the capacitance is broken, the screen jitter is caused by a power failure. After changing the capacitance, you can solve the problem.