Question about Mitsubishi WD-65738 DLP TV

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I have a mitsubishi wd 65738 and peoples faces appear smudged on the cheeks. Almost like a 5 o clock shadow. I have seen this before on other DLP tvs as well. Is this a light engine or main board?

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  • Mitsubishi Master
  • 14,553 Answers

I have in the shop also seen this issue on a few Mitsubishi sets, you may want to search for the service manual but I worked for a authorized service center for this brand and they had all kinds of issues--one was when the Optical engine was replaced there was a procedure done with the remote to mate it to the main chassis (set had reddish smearing--not extreme but noticeable. the procedure cured that.

These sets had so many digital issues with dozens of surface mounted caps on several boards failing that a few years ago they offered an entire signal chassis on an exchange basis.

The engine as you may (from the tone of your question) be aware is in constant communication with the main signal chassis---not very helpful I admit but it could be either----if that chassis is still available it wholesaled for about 250 and the engine might be more than 500---they are nice guys as the engine does not come with some mounting brackets etc that have to be removed from old one.

Good luck and see if you can find (I have seen some on the internet) a free download of that which may or may not help.

Posted on Dec 04, 2012

  • Patrick McAlexander Jan 30, 2013

    I thought I would post the solution to this problem. After changing the optical engine three times and the power supply and main board once each, a tech at mitsubishi suggested the ballast. VOILA! Perfect picture! Apparently Mitsubishi is having issues with wrong firmware on these ballasts.

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Posted on Jan 02, 2017

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techman
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SOURCE: Mitsubishi WD 73727 73in

Contact Mitsubishi with the proof of this and demand a new TV set. Maybe it is the service shop causing this, your warranty should also be extended for the time you were out of the use of the TV set while waiting for parts. If this does not work, the state attorneys office should be able to get you a new set or at least this one repaired. Good Luck

Posted on Sep 27, 2007

premtech
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SOURCE: mitsubishi wd-62825 dlp

The WD62825 has a Digital Module located on the left side of the chassis looking at it from the rear of the set. It's housed in a metal box that can slide out of its holder after removing the trim screws.
The module has its own power supply board and there are a group of 16v/1000uf caps on that board which commonly fail causing the constant flashing standby light. Further back on the module is a small board about the size of a matchbook called the E2P module. Its SMT (Surface Mount Technology) caps also commonly fail which can cause the same symptoms. Techs can tell whether the E2P has failed by simply removing it, hooking the DM back up and trying to power the set. If it powers on the picture won't be much good - but at least you can tell what's keeping it down...
Back to the caps on the pwr board. If they've failed they usually will buldge visibly on top. And ESR is almost not necessary. In any event that's the nuts and bolts on this model.
Is it a job for a layman? Yes and no - you might strongly consider a tech if you don't feel comfortable removing all the connections that the DM has with the signal board. There are about six - multi-pin - wired connections to unplug and then sliding the DM out of the unit and carefully removing the screws and latching to take the DM top cover off...
Hope this helps.
Bill

Posted on Nov 10, 2007

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SOURCE: Buzzing noise from Mitsubishi DLP WD-52327 after replacing bulb

Did your replace lamp come on the screen or did you lose picture? Just because the LED indicator suggest replace lamp it doesn't mean it needs it. If your pix was dull or loss of brightness then replace it, if not then just reset your lamp timer, check your owners manual for instructions.

Posted on Feb 14, 2009

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SOURCE: Mitsubishi WD-52525 52-inch DLP HDTV ywllow warning lamp light

that means your lamp it is getting to the end of its life.
sometimes even if the lamp still good the TV will send you that message because that timer is closed to 5000 hours

What you can do is open the lamp door, closed again and the tv will ask you if you replaced it the lamp, and just say yes and that sign will go away

or just simple replace the lamp. 915P020010

Posted on Apr 18, 2009

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