Question about Mitsubishi WD-52525 52" Rear Projection HDTV
The reason this is happening and the problem is getting worst is because the DMD board is starting to go bad some of the micro mirrors are getting stuck on the on or off position and the problem is only going to get worst if you want to fix this problem you need to replace the light engine here is a link that will teach you about this projection works
Posted on Aug 26, 2010
In a DLP rear projection tv like yours the image is generated this way: a bulb generates the light - the light is projected on an array of tiny mirrors that reflect the light towards a set a of lenses and from there3 to the screen. Those tiny lenses can move so they reflect more or less light - this way the image is created. In your case some of those mirrors have stopped working so they continuously reflect all the light that falls on them - the white dots you see.
The array (DLP chip) is dying, can't be fixed and must be replaced - it will be expensive.
Posted on Jun 12, 2010
this is a touchy subject for sony. basically sony has increased the brightness levels for the backlights to have better color tones in thier lcd's. well the downfall of this is the white spots you are experiencing. this is not a defect, you will never get them to go away, the only thing you can do is to turn the backlight and brightness down to reduce the white spots. if you contact sony, there is a software upgrade that will help reduce this issue...
Posted on Oct 25, 2007
If these spots are small, they are likely the visual effect of a failing DLP chip. When some of the tiny mirrored surfaces on the chip stop moving, this is the result. This is not something you can fix yourself. A Samsung authorized service center will charge $400-$500 to replace it for you.
Posted on Feb 18, 2009
SOURCE: white spots on TV Screen
<span id="ctl00_ctl00_MainColumn_CenterColumn_ThreadSolutions1_Repeater1_ctl00_lblSolution">DLP/mirror chip is going bad. A common problem on Sammy TVs after 2-3 years. Chip is user replaceable (try samsungparts.com or ebay) for about $150-200. Sammy was (last year) repairing the DLP White Spot problem for free. You MUST talk to ECR (executive customer service) to even think about getting that consideration--forget the standard CS people. Don't know if they are still covering this out of warranty in 2010.</span>
Posted on Aug 21, 2010
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