Question about Mitsubishi WD-73733 73" HDTV
I can help you understand what is happening in your Mitsubishi WD73733.
This is a very common problem for DLP TV's.
What is happening is that the mirrors on the DLP chip are sticking either fully open (white) or fully closed (black). The part that contains the DLP chip is the Light Engine. It is the most expensive part of the TV.
That said, there is a separate controller board for the DLP called the DMD. The DMD board can be purchased and installed separately from the light engine and typically sells for less than $200, if it can be sourced.
A failing DMD will show the same white dots on the screen as a failing light engine. Your service technician will be able to tell the difference once he has had a look at the TV's guts.
I hope you are under warranty or have an extended service plan for your set. If not, I hope the $200 part is the problem, not the $800+ part.
I hope that helps.
Posted on May 06, 2010
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Posted on Jan 02, 2017
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