Question about Mitsubishi WD-65733 65" HDTV

2 Answers

Small white dots are showing up on the screen when the bulb comes on. 10 to 12 dots sometimes more. Dots are dull at first and later turn bright white. I installed a spare bulb, but it did not change the dots.

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  • crduggan Nov 13, 2010

    I have white dots showing up on my screen. I have reset the tv and changed the bulb. They start out dull and then get brighter. There are about 10-12 of them now.

  • crduggan Nov 14, 2010

    Thank you, I have heard also that this could be a dmd or power supply problem.

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  • Master
  • 441 Answers

The white spots you are seeing are a result of dust or dirt in the light asm. Mits knows about this as a problem. The inside chamber of the tv needs to be cleaned. If your tv is in warranty they will come to your home and fix it. If not it is very easy to damage the tv by trying yourself, start with cleaning out the chamber that the bulb is in, use compressed air to blow out dust and dirt, them on the sides of the tv are round flaps that will need to be removed and this will go into the main mirror chamber, be careful but blow out any dust or dirt you see on the mirror. I would have a repair tech handel this unless you are skilled in this area.
good luck

Posted on Nov 13, 2010

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  • Master
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The first thing I would do would be to clean the optics and see if that resolves the problem, especially the mirror. You need to disassemble the screen assembly to get to it though. Do you want to try it yourself?

Posted on Nov 13, 2010

  • eagle338
    eagle338 Nov 13, 2010

    Well I don't wanna tell you to swap out one board after the other without confirming what the problem . I have to mention that this can be the DMD(digital micro-mirroring device) as well, but lets try to fix it without replacing any parts first.

  • eagle338
    eagle338 Nov 15, 2010

    It cannot be the power supply, just the DMD, the mircro mirrors' malfunction can cause the specs you are talking about.

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