Question about Dell Dimension 4600 PC Desktop

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"dancing" stripes and bands across monitor

It often boots up fine, but within a few minutes I have those light colored bands getting progressively worse, until the screen starts to become impossible to read. Then it turns a blue-green, and obscures verything. After that, if I stop using it, it will sometimes clear up again.

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This could be a Graphics card heat issue, Have you checked the inside of your case for dust lately?
If thats not it check for updated drivers.

Posted on Apr 16, 2009

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Posted on Jan 02, 2017

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This is heat, and is a common problem; it affects two of mine. You can verify this by having a can of Dustoff available and catching it when it first starts. Blow in at the top of the monitor through the holes in the back in the same region as the band. The color aberration should go away.

My solution was to make a shroud from black foamcore and use a spare power supply fan to blow air into the case at the top. This has worked for my two monitors for about 18 months. You can also just buy a 12v computer cooling fan for this purpose.Should be somewhere around 75mm in size and quiet, 'cuz you'll be putting up with it if it's not.You can either get a general 12v power supply, or an adapter that fits the 12v power out at the back next to the USB input connector.

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