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Old Samsung DLP pixelation issue...diagnose?

Rear Projection Units - www.avsforum.com
Have an old Samsung DLP, HLN567W, it recently started having a pixelation issue, shown in the picture.

Hoping to diagnose the issue, so I can try fixing it myself.

The day it happened there was a brief power outage in the house, enough to reset clocks (microwave, alarm clock), but not to shut down the TV.

Any help much appreciated...thanks!
Date: Aug 25, 2013   


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