Question about Mitsubishi WS-55859 55" Rear Projection Television

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DM Module How can I remove the wires from the DM Module w/o removing the unit first?

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You have to take the top piece on the left side off w/4 screws. Then there are 2 things that is holding the DM unit in place on the top of it and bottom of it. Take the top one off. This will allow you to remove the DM box. Use like a tackle box or something to hold it up while repairing it. There are some screws that hold the main board in place in the front of it those will need to be removed to allow you to move it out a little.

Posted on Sep 04, 2008

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Posted on Jan 02, 2017

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We lost power the other night. Now I have a continuous green blinking light and it won't turn on. I have tried everything the manual says.


Try Going To The Mitsubishi Web Site. Downloading The Mitsubishi Service Manuals If You Don't Already Have It. It Will recommend The parts You Need To ordering. Circuit board photos are also shown which provide a visual reference during the repair process.

If you decide to have a service technician do the repair, insist that the "DM" module is removed from the TV and ONLY the four 1000uF, 16V Capacitors (Caps) located on the DM Module are replaced. MOST techincians will INSIST on replacing the entire DM Module and not simply the capacitors. The cost is about $200 for a technician to replace the capacitors and $1000 for replacement of the DM Module. As you will read below, doing the repair yourself will cost less than $4.00 for the 4 Caps.

Sep 04, 2011 | Mitsubishi WD-52525 52" Rear Projection...

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Blinking Green Light on Mitsubishi Projection TV


Continuous blinking green LED on Mitsubishi's Projection which normally blinks after a power surge means that the microprocessors inside the unit are unable to communicate with each other. Usually Mitsubishi's Projection TV use 1000uF/16 in the DM MODULE (which is one of the two microprocessors), as these capacitors are too small for the load they get they usually fail usually after about 3-5 years.
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They might also fail due to voltage fluctuations. To resolve this issue these capacitors should be replaced with 1000uF/25 volt or 1000uF/35 volt capacitors, so that they can handle any voltage spikes that will occur. To do the repair you’ll need to take the back off the TV apart in order to remove the faulty DM module and need to desolder the old capacitors on DM board and install new ones. All this is only recommended to be done by someone who has electrical expertise.

on Jan 10, 2010 | Televison & Video

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I plugged in the tv and the green Timer light keeps flashing and tv won't go on. Help!


Hi


Thanks for using FixYa. Continuous blinking green LED on Mitsubishi's Projection which normally blinks after a power surge means that the microprocessors inside the unit are unable to communicate with each other. Usually Mitsubishi's Projection TV use 1000uF/16 in the DM MODULE (which is one of the two microprocessors), as these capacitors are too small for the load they get they usually fail usually after about 3-5 years. They might also fail due to voltage fluctuations. To resolve this issue these capacitors should be replaced with 1000uF/25 volt or 1000uF/35 volt capacitors, so that they can handle any voltage spikes that will occur. To do the repair you'll need to take the back off the TV apart in order to remove the faulty DM module and need to desolder the old capacitors on DM board and install new ones. All this is only recommended to be done by someone who has electrical expertise. Please rate the solution if the issue is resolved or post a comment for further assistance.

Thanks

Rylee

Oct 26, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

I need a dm module \


DM is no longer available from Mitsubishi.

Unit can be removed and sent our for repair----


PTS ELECTRONICS---you will find them on the web and you can call or email for a quote.

Usually there are some caps and or fuses that fail in the DM unit.

Did you try to disconnect front keyboard to make sure it is not the problem?

If this told you something you did not know rate this solution as very helpful as I do this for free.

SD TECH

Sep 05, 2010 | Mitsubishi WS-55711 55" Rear Projection...

1 Answer

STANDBY CONT FLASHES


If your unit is a Mitsubishi then the below information should result in the repair of your unit.
If your unit is not a Mitsubishi then we need to know the make and model of your unit to further help.

Your particular bigscreen has a digital module located on the left rear of the unit, and is mounted vertically. This module can be removed and the shielding taken off. On the component side of the DM module is a small power supply circuit board which needs to have all five electrolytic filters replaced. The filters are typically 1000 micro farad at 25 volts and are easily obtained by you local electronics supplier or repair shop.

The reason your unit does not stop blinking is due to these out of tolerance electrolytic filters. They became out of tolerance when the unit was left unplugged. Once the filters are replaced, and the module re-installed, the green blinking light will extinguish after about one minute, at which point the unit will turn on.

Apr 29, 2009 | Televison & Video

1 Answer

Flashing power light tv wont come on mitsubishi 1080


If the tv has the continuous flashing led, you have a DM board problem. It is likely bad capacitors in the DM module.. there are 4 of them 1000uf caps that will go bad. They will get a bulging top on them when they go bad. . Mits recommends replacing them with 680uf caps with a comprable or higher voltage rating. The DM module in on the left side of the set (viewed from the back) and is somewhat difficult to remove.

Dec 03, 2008 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Mitsubishi ED-52631 does not turn on


Hello Getoxygen,

This sounds like a DM problem. To repair this you will have to replace 4 or 7 capacitors (1000uf 35v).
Here are the instructions. Depending on your set this may differ a bit, but the central theme is getting the DM free to be worked on.

This was taken from a TV repair site used by TV technicians.

STEP 1) The DM Module loose. But itcan't be rotate out because of the upper plastic guide.
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STEP2) How the DM Module is rotated out of the TV case. Allow thewires
entering the DM Module to be an axis point of the rotation.That way they barely move and don't get snagged or stretched.
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STEP3) The DM Module out and the side cover of the metal housing removed.
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STEP 4) My setup to do the soldering work.
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STEP5) Up Close of the daughter board and the seven capacitors on
MitsWS-55859.
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STEP 6) The daughter board unscrewed and flippedover where you will be soldering.

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STEP 7) The UpperPlastic Guide that must be removed to rotate the DM Module out of theTV set.
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STEP 8) Get this wooden horizontal shelf out (4screws) and getting the upper plastic guide out becomes easy.
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STEP9) Helpful Hint about the wooden shelf and the platic guide that bothneed to be removed.
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I hope this helps
Thank you,

Nov 07, 2008 | Mitsubishi WD-52725 52". Rear Projection...

1 Answer

DM module removal


Hi,
Check this link for guidance with pictures about DM board removal.
Thank you.

Oct 07, 2008 | Mitsubishi WS-55813 55" Rear Projection...

3 Answers

Mitsubishi ws-55513 green flashing light issue


I would asssume that the four cap replacement you're referring too is in the power supply of the DM module. (The large silver looking box on the left looking at the back of the TV)..
You can unplug that module from the signal board and remove it. Open the cover and you should find 4 16v caps in the power supply. If they look buldged chances are they are the failure. If not you might want to take an ESR meter to them to confirm they're okay and move on... In the back of that module is a small vertical board called the E2P module. Unplug it from the DM and plug the DM back into the signal board. If it powers up your picture might not be in the best alignment but you've identified the problem - just replace the E2P module.
If none of this works you're going to start getting into some greater technical requirements - but let's cover that when you get that far...
Bill

Dec 28, 2007 | Mitsubishi WS-55513 55" Rear Projection...

3 Answers

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

Oct 29, 2007 | Mitsubishi WD-62825 62" Rear Projection...

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