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Have the issue when the picture freezes but turns black and white and then won't shut off but still gets sounds. I've replaced bulb. TV will work for 20-30 minutes before it locks, and loses color.
Color wheel because of the losing color, but the light engine because of the picture freeze. It's very difficult to judge since I can't be there to see it. I'm leaning toward the light engine though. The only fix is to replace the DMD board, or entire light engine.
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This tv have a colors wheel design in it.The tv make loud grinding motor noises or pictures flashes or freeze and pictures turn in black&white with sound.The tv colors wheel it is dying or worn out already.Don't tries to change the tv colors wheel ur self.If u don't any mechanical skills,because the colors wheel it sit way back of the tv,must take out many mechanical parts before even can come to the tv colors wheel itself to replace it.Best to hire a tv tech. to change the colors wheel,so no problems for tv funstions for later or damages more parts on the tv set,if u install the new colors wheel in the tv wrong way.
Sounds like your color wheel may be at fault. Do you ever hear any unusual noises coming from the rear of the TV? Color Wheels usually make a humming sound as they go bad. This is because the tiny bearings in the color wheel motor have begun to misshape from use and heat. This is a known issue in this TV! Expect to spend $300-500 to have this serviced by a service company. If you have the right stuff, you can do it yourself. If you search the web, you'll find a color wheel for this TV for under $100, but installation can be tricky.
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