Question about Mitsubishi WD-73927 73" HDTV

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DLP TV - After warm up - colors smear

Greetings,

I have a Mitsubishi 73" DLP TV, model WD73927, This problem has taken a while to manifest itself, about two months.

Initially I thought that Comcast with additional channels were degrading their signal as they had added channels and thought nothing of it. However, in the past couple of weeks the issue has gotten significantly worse.

First there was a solarization effect on blues, then on white or light colored scenes, and eventually people's faces are going to pink solarization with an occasional light flash of the entire picture, while detail is maintained in complicated portions of the image.

From a cold start (off for several hours or overnight) the picture looks fine for the first half hour (sooner on warm days), and the visual artifacts start to appear two hours later the effect is full blown. Turning off the TV for a minute and turning it back on, only reverses about 15 minutes worth of effects.

Based on the aforementioned symptoms, I suspected that it was an overheating problem, so I took the TV apart and cleaned it (there was a lot of dust except on the optic route which appeared clean), put it back together. I also ensured that the fans do operate when it is operating as there is a stream of warm air coming out of the unit, and the one that I can see from the back is operating. This only delayed the effect by a few minutes.

From what I have read, this has something to do with the color wheel.

Can anyone confirm that this is the issue, just to replace it? If so, what is the part number for it? If not, then what else could it be? I don't want to spend another fortune repairing it due to

Can anyone point me in the correct direction on a repair, as I have recently lost my job, but have no problems doing just about any kind of repair from notebook computers to 100+T cranes and anything and everything in between. It's just need the knowlege required to repair it.

Thanks in advance for your help.

Best Regards,
Jan

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  • Anonymous May 24, 2009

    same problem Blues and whites are very affected

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Did you ever figure the problem out? My TV is doing the same thing.

Posted on Sep 23, 2010

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Posted on Jan 02, 2017

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