Question about Mitsubishi WS-55859 55" Rear Projection Television

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Mitsubishi tv repair WS55859

Replaced the 1000uF 16V caps on the DM board. Still same thing. Blinks green timer light for about 3 sec. than shuts off. I can hear a relay trip inside somewhere.

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  • mengle77 Mar 01, 2009

    I have a very similar problem. My set has a constant blinking green light and won't turn on at all. Does anyone have a wiring diagram for the 55859 set? I'm technically inclined and do have a few test instruments around. If so, please email to Thanks!

  • brewster812 Mar 06, 2009

    My 55859 goes into reboot mode - nonstop blinking green light - whenever the set looses power. Sometimes it takes several days before the set will work again but this time I'm going on 8 days. Last year a repair tech told me the DM board needed to be replaced but Mitsubishi doesn't make them anymore and has none in stock. Any suggestions would be greatly appreciated.

  • scott Mar 14, 2009

    I have a ws-55859 mitsubshi tv I just replaced the 7 1000uF 16V caps on the DM board and still won't power up. I am parting out the tv, bulbs, projectors, everything if you need any parts you can email me or call me I am located in north west Indiana. 219-362-6923,


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Same problem I am came out said it was probably the board containing the power source which on my tv is the right circuit board, said he would either have to buy complete board or get a refurbished one....probably about $400 bucks.

Posted on Nov 21, 2008

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The clicking you hear is a relay that repeatedly connects, then disconnects the AC to prevent fire or further damage. 
If it just fails to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

Posted on Oct 28, 2008

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Mitsubishi green blinking light of death

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Green blinking light of death on Mitsubishi DLP TV means that the DM failed to booted up. I would advice you to replaced the 7 1000uf electrolytic capacitor on the DM board. Most of the time it fixed the symptoms. Please inquire at if they have an available DM repair kit for V36 chassis (WD-57733 chassis).


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The green timer light is blinking with no interruption on my WS-55859. TV will not power on after the reset button is reset or is disconnected from power.

Thats almost always caused by failed DM capacitors on the DM power board. There are 7 that will need replacement. There is a repair kit called the WS55859 DM repair kit which has the caps and the CD with repair instructions available from

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After a power outage the timer light on the front of the tv panel blinks but the tv will not go on. the owners guide states"If green light on frnt panel is plinking, please wait for at about one...

very common problem caused by failed DM capacitors. You can get the WS55859 DM repair kit from which should solve the issue. The kit contains the upgraded caps and the CD with repair instructions.

Feb 16, 2011 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

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


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.



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Blinking green light on my mitsubishi tv....model ws-65869

Replace the Capacitors on the DM board. You can get the WS55859 DM repair kit which covers your model from which has the caps and the CD with repair instructions

Jul 14, 2010 | Mitsubishi WS-65869 65" Rear Projection...

2 Answers


This could mean the DM (HD tuner) failed. In the future connect your TV to a good surge protector. The manufacturer's solution is to replace the module and swap the memory from the failed part to the new one. (Except for the memory it is just an unplug one and plug in the new one.)

If you are handy with a soldering iron, you may be able to fix this by opening the DM module and removing 8 capacitors (as I understand the board) and replacing them. All 8 are 1000uf 16v 105C Capacitors

This URL has an good explanation of the process:

I hope this helps.

Cindy Wells

Jun 19, 2010 | Mitsubishi WS-55859 55" Rear Projection...

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Problem with Mitsubishi 52525 TV

A teady blinking green Led is usually caused by the foru 1000uf 16V capacitors on the DM pwb

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I own a Mitsubishi WS65869 it has not been working for a few months now. All I remember is shutting off one day a green blinking light started and does not turn on anymore. Can you give me some idea to...

Hey There,

It sounds like you either have a bad DM power board or a few caps (capacitor) are blown on your board. If you are comfortable with soldering then you will need to replace your Caps which are 1000uf 16V 105C and I would replace all of them ($1.25 ea). I found this great PDF online to help (this is not your model# but it expalins where and what your DM Power board is located) If not, Sears Parts carries DM Boards for your Mitsubishi - call in your Make/Model# and tell them you believe your DM power board has gone bad. The board should cost no more than $50-$70. Replace the board and let the TV blink for about 30-45 secs and it should turn on. If you decide to take it to an electronics shop, unless you know the owner, prepare to spend anywhere from $800-$1100..

Good Luck and Happy Holidays..

Dec 19, 2008 | Mitsubishi WS-65869 65" Rear Projection...

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Blinking light will not turn on

replace C81A2 C81A3 C81B2 C81B3 on the dm module and C8F19 C8F21 C8F22 C8F27 on the fmt pcb all new caps should be 680uf at 16v instead of 1000uf at 16v

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