Question about Sony Grand WEGA KDF-42WE655 42" Rear Projection HDTV
I have sort of round yllo and red spots on the screen. Someone said that if they are round it is a dust problem. Can u tell me how to remove the dust
Well I'm an Engineer not an electronics tech but I was able to tear down my KDF-42WE655 and vacuum out the optical block with my TriStar canister vac. The three LCD projeciton panels were very dusty. I was suprised to see how dusty compared to the yellow, pink and blue spots I saw on the screen. Not an easy task to be sure, but not impossible if you are into taking stuff apart to fix it.
Posted on Jun 03, 2008
The dust is on the lcd located inside the optical block. It requires quite an extensive tear down and if you're not at the minimum a CET don't attempt this one yourself... Most shops won't even do this cleaning in the home and any repuatble shop that does it has a clean room they will put it in to do the work..
A single speck of dust no larger than 25 microns on the lcd can shadow in the picture. To give you some idea how small that is a blood cell is 7 microns wide...
Posted on Feb 03, 2008
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Posted on Jan 02, 2017
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