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Monitor flicker

By hurdk ·
After about 10 minutes the screen on my monitor begins to flicker. I am interested in finding the cause and solution.

Thank you.

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Monitor flicker

by Ann777 In reply to Monitor flicker

If this is an old monitor, it's probably beginning to fail. Monitors attract dust and over time everything inside just gets coated... heat dissapation is a problem. You can try (with the monitor power off) blowing compressed air into the monitor(ie dusting it without opening the case), but that only tends to help time-wise. The flickering will only get worse... until the monitor is replaced or repaired.

If this is a relatively new monitor and this is a sudden occurance, you might want to look for interferance causing things... such as flourescent lighting, clocks, speakers set right beside the monitor, etc.

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Monitor flicker

by hurdk In reply to Monitor flicker

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Monitor flicker

by timwalsh In reply to Monitor flicker

Has it always done this, or did it start recently?

Monitor flicker (depending on the type of flicker) can be caused by any number of different things.

First thing to check is whether the monitor video cable is seated correctly (check both the computer and the back of the monitor - some monitors have removeable video cables)

Visual flicker is usually caused by a refresh rate that is too slow. Right-click on a blank area of your desktop and choose Properties. Go to the settings ta and click the Advanced button. Go to the Monitor tab. You should see a box labeled "Screen refresh rate." Unlike most flat panel monitors or laptop screens, which tend to have fixed refresh rates, most CRTs will accept a range of diffferent refresh rates. Any setting below 72 hertz can cause a visible "flickering" on your screen. What is actually happening is that the screen is refreshing at a rate slow enough for the eye to discern.

If the refresh setting is already greater than 72 hertz,something else is causing the problem. It could be that the monitor is sitting next to a high-power electrical conduit, or other piece of electrical equipment emitting a high-power electro-magnetic field (which can cause all sorts of wierd things to happen to a monitor). Try moving the monitor to a different location to see if the problem continues.

Other possible causes:
Monitor going bad
Video card going bad

Other things you can try:

Moving the suspect monitor to a different computer to see if the problem continues.

Move a known, good monitor to your computer to see if the problem continues.

If the problem follows the monitor, the monitor might be the culprit. If the problem stays with your computer, your video card is suspect.
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Monitor flicker

by timwalsh In reply to Monitor flicker

Being that you are situated in a military facility, you will most likely need to get the technical support folks involved to do anything beyond checking your refresh rate (they tend to get picky about people moving things around).

Hope this helps.

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Monitor flicker

by hurdk In reply to Monitor flicker

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Monitor flicker

by csmith In reply to Monitor flicker

This is not refresh rate.
This is not video card problems.
This is not EMF.
This is usually dirt buildup inside the monitor or age.
The dust builds up inside the monitor, and in humind locations particularely, provides a conduction path, or causes overheating.
The latter in your case.
It is cleanup (cleanout?) time for this monitor.
If its age, (Cleaning does not work.) replacement is the cure.
Regards, Chris

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Monitor flicker

by hurdk In reply to Monitor flicker

This answer makes sense. I think I will need a new monitor since it is difficult to clean. Thank you.

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Monitor flicker

by hurdk In reply to Monitor flicker

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