Question about Mitsubishi WD-65833 65" HDTV

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DM removal Have service manual in hand; which page(s) actually cover the removal of the DM. In addition, what does the acronym DM stand for? Might help me find the info if I knew what it stood for...

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You will need to remove the entire chassis block as outlined in the manual. DM stands for digital board. It will be listed in the manual as PWB DM its sandwhiched in between other boards inside the chassis . Which is actually a metal box that will need to be disassembled then each board removed to get the DM . The DM is usually the bottom board. I dont have access to the WD65833 sertvice manual, but I am famillar with it. The DLPs are all simallar the entire Chassis block needs to be removed. Hope this helps if you need more info, let me know.

Posted on Apr 08, 2008

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Where is the dm board for ws-55511 located


The dm power board is the small board shown in the illustration below it has the 7 capacitors on it and its located inside the metal box on the far left side of the TV when looking in the rear cover. The metal box stands up vertically2_12_2013_9_52_00_am.jpg

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The constant blinking green light means that the TV is not booting up. This is a common problem on this set.You need to remove the shield from the DM board (standing upright on the left where the DTV RF connector is)and inside you will see the four leaky capacitors (1000 MFD 16 VOLT)replace them,plug the TV in and wait 70 seconds for the blinking light to stop,then turn on the TV.The hard part will be removing the board from the TV(lots of screws and connectors,takes time)

a3d2d2a.jpg Just click below for electronics store online;

Partstore.com.

Mitsubishi- Vance Baldwin Electronics


http://servicemanuals.vstore.ca/


http://www.electronix.com/catalog/


http://www.freelists.org/archives/techassist/


http://www.eserviceinfo.com

Regards,
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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.

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1 Answer

On my WS-55511 TV, after a power interruption, will not power up. All i get is a continuos blinking green light.I tried unpluging the tv several times, no luck.


Good Day,

LED does not stop blinking after plug in. Check for 12 volts at connect or PF pin 10 and 28 volts at connector PF pin 11, (on the board on the right hand side, but on the left side of board towards the back of TV). If the supplies are correct suspect a problem in the DM Assembly (part # 955C230002). Part is not available for replacement.

Check C9B01, C9B02, C9B03, C9B13, C9B14, C9B17 and C9B18 (1000 UFD, 16V, 105C) on the DM Power PCB located within the DM Assembly. If they are bad or not, replace them all with part # 181P734030 (680 UFD, 16V, 105C).


The DM (Digital Module) Assembly is located on the extreme left of the chassis from the back. It is standing in a vertical position. Remove cover and you see the Cap’s in one corner of the inside PCB.

Good Luck, Big IRISH.

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Pretty sure you just pull the front lower cover from the side edges.
And then there is a smaller cover with a few philips screws holding it (lower front) , to remove the upper section you then remove the screws just under the screen edge about 5-6 screws. unplug the two cables and slide the screen straight up and pull it out, hold it with one hand on the bottom and one on top so you don't drop the screen.
hope this helps you can get the actual service manual here for a few bucks
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1 Answer

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Hello,

Did you check the caps on the DM board? They usually go bad after a period of time. Remove the DM board and the metallic cover and there should be 4 to 7 capacitors (There are different revisions of the DM board). Check these caps also, replace if needed.

Thank you,

Shuttle83

http://www.electron-age-technologies-llc

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1 Answer

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Change the 1000uf capacitors on the DM board. Its easy but getting the chassis out is a job. The service manual will make it easier and will correctly identify the DM board and where its located. Heres where you can get the manual and free tech support.
http://servicemanuals.vstore.ca/

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4 1000mf caps on the dm module. replace with equivalent size and temp range. dm mod is inside the vertical standing metal case in left hand side of chassis looking from the back

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You will need the service manual to do this repair. I happen to have it, as this site was suppose to put in the pictures and things to explain that a lot of TV sets are still using this DM board, but they are building them differently. Just follow the directions in the service manual on how to remove the DM board and then follow the directions in the article on repairing the DM board. I will need your e-mail address to forward this service manual to you. Good Luck

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