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LCD monitor's colors tremble, coloured pixels everywhere

m3lis
m3lis asked
on
Medium Priority
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Last Modified: 2009-12-16
This started about a week ago, when I started the pc, my desktop, wallpaper, taskbar were all surrounded by red green blue orange or purble pixels, that were flashing, i.e. appearing and disappearing at various places, like a winamp visualation :P. I managed to get over it by using an all-white screen saver and giving the monitor sometime off.

However, today the problem is still persisting, and even if I get over it it is only for a few minutes - then the corruption returns. I tried putting the monitor on VGA instead of DVI, changed some settings, refresh rates, reducing brightness but nothing particularly helped. Please help. Thanks.
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Top Expert 2012

Commented:
Narrow down the problem by trying another monitor - this could be the monitor or the video card.

Author

Commented:
It is the monitor, as I tested it on my other PC.

From my searches, I found out that this may be the image persistence / burn-in problem, but I am not quite sure, as the images are not burned in, they are hust surrounded by various coloured pixels. Any additional info would be helpful.
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Top Expert 2012

Commented:
LCDs do not suffer from burn-in, as CRTs do.  Check the cable for a loose connection or bent pin; if this is not the case, try a different resolution and see if the problem continues.

Author

Commented:
They do suffer - it is just temporary in most cases, according to what I've read.

I tried a different resolution, and a different refresh rate but it did not help.

I also tried using a VGA cable instead of a DVI but the corruption was the same.

Also, when it is not connected to a computer but is powered on, the monitor displays a "no signal" blue box with some red pixels on it!!!
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Top Expert 2012

Commented:
> when it is not connected to a computer but is powered on, the monitor displays a "no signal" blue box with some red pixels on it!!!

This is a clear indication that the monitor is faulty and needs to be replaced.

Author

Commented:
Is this possible however? It is only a few months old.
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Top Expert 2012

Commented:
"New" is not a guarantee that it will last the expected lifetime - mean time before failure is a statistical measure, which means some last longer and some last less.  Some brands are better than others, also.  Which brand was this one?

Author

Commented:
It is a Viewsonic $600 monitor, this is not logical.
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Top Expert 2012

Commented:
I can understand your disbelief - $600 is a lot for a monitor, and it should work properly for a long time, but from what you tell me, it's broken.  Is there a "reset" in the controls?  If not, I don't have any other suggestions except to bring into a repair shop or replace it.

Author

Commented:
What do you mean by a reset? Also, would any shop fix it or does it have to be Viewsonic, cause I bought it online from the US and there is no such shop here.
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Top Expert 2012
Commented:
I mean either an onscreen menu item using the monitor controls or a button of some sort that sets everything back to defaults.  Any shop that advertises itself as being capable of repairing monitors should be able to do the job.

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Author

Commented:
Lets hope you are right. Thanks

Author

Commented:
Would changing the backlight help this situation?
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Top Expert 2012

Commented:
No, the colored pixels are an indication the wrong pixels are lighting up, not that there isn't any light.

Was my advice that bad, as to merit a "C"?  I thought I answered your questions.

Author

Commented:
I am sorry - it was not bad, you just did not tell me a solution I did not already know.

From my research, I found out that the monitor's inverter is failing, though I cannot find a new one on the internet to replace it.
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Top Expert 2012

Commented:
Well, sometimes the correct answer is what you suspect it is.  I don't know what other information I could have given you to solve the problem, other than the path you are taking.  See this note about grading guidlines: http://www.experts-exchange.com/help.jsp#hi73
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