Question about Mitsubishi WD-52525 52" Rear Projection HDTV
Faded pictures it is caused by leaky or short capacitor it could also be power supply problem causing the optic engine and light not to work correctly, or you could have a bad DM board, or a bad light engine sounds like a bad DM board find six of the fourteen known-problem caps to be visibly bulging -- both 3300s and two of the four 1000s on the PWR PWB plus two of the four 1000s on the FMT PWB (see photos below). Ironically of the four 1000s on the DM PWB, which I have heard are the most common to go bad, were bulging and I considered skipping these as the DM it is the toughest board to extricate from the chassis, however I figured I had come this far and I would just as soon replace all twelve 1000 uFs as the parts cost $0.23 and I really never want to have to do this again.
If I had to bet, the two 10V 3300uF caps on POWER board, which were actually leaking black goo, are the actual culprits, but with four of the 1000 uFs also bulging it is probable only a matter of time until they failed as well.
Here is the POWER PWB with the known-problem caps (C9A37, C9A38, C9A51, C9A52, C9A61 and C9A62) highlighted:
here's the FMT PWB with the known-problem caps (C8F19, C8F21, C8F22 and C8F27) highlighted:
and the DM PWB with the known-problem caps (C81A2, C81A3, C81B3 and C81B4) highlighted:
Here are close-ups of the bulging caps (C9A37, C9A38, C9A52 and C9A62) on the POWER PWB:
And here are close-ups of the bulging caps (C8F19 and C8F27) on the FMT PWB:
Hope it may help you; Regards;
Posted on Jan 29, 2009
Clean the lens and mirror you have to take of the screen al the screews on back and a few on the front
Posted on Jan 29, 2009
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Posted on Jan 02, 2017
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