Mitsubishi WD60735 Dark Picture - AVS Forum

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Rear Projection Units

A.R.G's Avatar A.R.G
08:49 PM Liked: 10
post #1 of 10
02-09-2012 | Posts: 5
Joined: Feb 2012
Have a three year old Mitsubishi WD60735 dlp tv. About a month ago the picture started to get noticeably dark even with contrast and brightness turned all of the way up. I figured that it was a lamp issue so I replaced the lamp. However, there is no noticeable difference between the old and new lamp. Any other suggestions?
videobruce's Avatar videobruce
06:45 AM Liked: 161
post #2 of 10
02-10-2012 | Posts: 15,400
Joined: Dec 2002
How many lamp hours?
Have you cleaned the inner lens? Search this sub forum how to do both.
A.R.G's Avatar A.R.G
07:30 AM Liked: 10
post #3 of 10
02-10-2012 | Posts: 5
Joined: Feb 2012
Brand new lamp, and cleaned the front lens (removed the screen) and cleaned the lens that abuts the lamp, I opened the back and found massive amounts of dust, went a few layers down but stopped at what I think is the light engine, couldn't access any more lenses.
videobruce's Avatar videobruce
01:11 PM Liked: 161
post #4 of 10
02-10-2012 | Posts: 15,400
Joined: Dec 2002
My bad, I should of specified inner lens of the light engine.
Look for my thread on "no more halos". I also was looking for the set hours.
A.R.G's Avatar A.R.G
06:26 PM Liked: 10
post #5 of 10
02-10-2012 | Posts: 5
Joined: Feb 2012
The set has 4800 hours.
videobruce's Avatar videobruce
06:59 AM Liked: 161
post #6 of 10
02-11-2012 | Posts: 15,400
Joined: Dec 2002
Over how long a period of time did you notice it? Was it all at once, days or weeks?
It might be trouble with a processing board, not optical/lamp related.

I never heard of any of these getting 'dark' except over thousands of hours of use.
A.R.G's Avatar A.R.G
10:13 AM Liked: 10
post #7 of 10
02-12-2012 | Posts: 5
Joined: Feb 2012
It was over a several month period. It wasn't bad at first, I just noticed that I had to turn up the brightness a few notches and that would return it to normal. But once I had turned the brightness up full it became very noticeable quick. It went from normal looking (maybe a little dark in a bright room) to unwatchable within about 3 weeks.
videobruce's Avatar videobruce
11:19 AM Liked: 161
post #8 of 10
02-12-2012 | Posts: 15,400
Joined: Dec 2002
I will have to say it's a electronic issue, no idea where to start.

You do have the service manual don't you?
A.R.G's Avatar A.R.G
09:36 PM Liked: 10
post #9 of 10
02-12-2012 | Posts: 5
Joined: Feb 2012
No I don't but I imagine that I could probably find one online somewhere.
1959harvard's Avatar 1959harvard
05:24 PM Liked: 10
post #10 of 10
01-10-2014 | Posts: 1
Joined: Jan 2014

Ours turned dark picture pretty much over night.  Is it a lamp or does anyone know?  Changing contrast  & brightness didn't affect it.


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