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U hear grinding noises,squiling noise,before colors fades in&out,turn to Black&White picture,than died?Yes,than ur DLP tv have a colors wheel,it defective,require replacing.The colors wheel is spinning off of it motor axis.The tv tech,should be hire for changing the tv colors wheel.
Yes, its the Lamp sparking is coming from your Ballast Board their is a What they call it Spark Cap diode it will ark when Lamp is Bad. FOX has that Lamp for $139.00 1-800-227-5369 Mats Electronics Listed Lamps for $99.00 and up? 1-800-628-1118
The color wheel sits inside the light engine. in other worlds they are trying to sell you the whole thing instead of just the color wheel. I have had the same problem for some time, and people have charged me $100-$150 dollars to fix my tv. I would be willing to fix your tv, and you wouldn't even need a new light engine or color wheel. If you are intrested I can do it for a very low price. I am more then quilafied to work on electronics. If you have any questions e-mail me at email@example.com
The color wheel is the most common problem when it comes to noise from DLP's.
To determine if it is a color wheel or fan:
Turn on the set.
When the noise starts, turn off the set. If the noise goes away within 5 seconds, then the color wheel is bad. If the noise goes away after one to one and a half minutes after the set was shut off, then one of the fans are making the noise.