Question about Mitsubishi WS-73909 73" Rear Projection Television

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WS-73909 Blink of Death Question

I have been researching the capacitor replacement for the last 24 hours concerning the DM board for my particular Mitsubishi television and had a couple of questions concerning the replacement. I am by no means an electrical engineer or really all too familiar with working with capacitors but was curious particularly in safety concerning the capacitors and the energy stored within. Is there a risk with these 16v capacitors used in this DM board? Should I use a discharge method to ensure safety and which one would be best? I am not really interested in purchasing the package I have seen posted as a response throughout this forum (since I have verified I can get the capacitors for about 12 bucks myself) but would appreciate any information relating to my questions about safety. Thanks!

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  • rtfrisk May 23, 2009

    Thanks JMG for the response. Did what I feel was a good job replacing the capacitors but have run into another problem now. When intially powering up the television, the blinking will go off after the default 60 seconds. Then, when I turn it on, it goes off after 3 seconds and no picture ever appears. I can hear an audible click and I think that one of the transformers may be the culprit. Any ideas pertaining to this problem? Am I passed the limit of my capabilities as a repairman? Thanks in advance

  • rtfrisk May 23, 2009

    Well after some more troubleshooting it has been determined that I am getting an error code of 1,2 for 10 seconds similar to other posts on this website. It appears to be an IC convergence problem but am having no real luck locating this particular part inside of the TV. I will try posting some pictures tomorrow and hopefully someone can give me a general idea where these parts are located.

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These capacitors are not dangerous but, be sure you install them exactly as you removed them for, if they are installed backward you have a firecracker when you power them up

Posted on May 22, 2009

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1 Answer

Ws 73909 has bad dm module. Where can I get it repaired or replaced?


If this is for the green blinking light issue, you can easily fix yourself if you have a soldering iron. It is just a few capacitors. But if you can't, then just about any mom n pop service compony will fix it for you, but will charge a lot of money to do it.

Mar 19, 2013 | Mitsubishi WS-73909 73" Rear Projection...

1 Answer

I have a Mitsubishi rear projection TV (WS-73909) that didn't turn on and had a green blinking light. I replaced the 7 DM capacitors and now it turns on. Both the remote and front control panel ca


Let me know as I can look for this---the set has a keyboard lockout that is cleared by holding the menu or another front button for more than 5-10 seconds with set on---I can find the service manual and check if needed.

Nov 04, 2012 | Mitsubishi WS-73909 73" Rear Projection...

1 Answer

I have a mitsubishi ms-65511 and we had a poweroutage for several hours today and now the tv won't turn on and I am getting a continuous green light of death ... HELP


Thats caused by weak capacitors on the DM board which cannot recharge after the power has been restored. Very inexpensive repair . The WS48511 - WS55511 DM repair kit from www.tvrepairworld.com has the capacitors and the CD with repair instructions which should solve the issue of the steady blinking green light.

Oct 11, 2011 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Mitsubishi WS-65511 has flashing timer light but will not turn on.


I used to have a WS55909 and had this problem. The light is supposed to blink for one minute while the DM (digital module) boots up after a power loss. If the light continues to blink indefinitely, there is a problem with that board. The DM power supplies are known to have faulty capacitors on these models and will need to be replaced. If I remember correctly, there are (7) 1000uf 25v capacitors and they should be desoldered from the board and replaced with 35v ones. Note that my TV model already had 35v caps but changing them solved the problem: electrolytic capacitors have a much shorter life than other components.
The DM is on the left side and is where ANT-DTV and the IR repeaters plug in. The power supply is the board above the main DM board inside the DM case.
If this sounds too technical for you, get a new TV because a repair guy will charge you more than the TV is worth. In other words you could get a (30-46") LCD TV for the same price.

Oct 21, 2010 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Mitsubishi WS-65611 Projection TV When I turn


The problem is common to Mitsubishi projection TVs. Technicians dubbed it as the "blinking green light of death" due to its notoriety.
Here's the basic troubleshooting of the said problem.

  1. Make sure that no front panel buttons are inadvertently stuck in an "engaged" position.
  2. Disconnect ALL devices from the TV.
  3. Press the SYSTEM RESET button and hold for 10 seconds. Proceed if the problem still exist.
  4. Press and hold POWER and MENU buttons simultaneously for 20 seconds. Proceed if the problem still exist.
  5. Unplug the TV from it's power source for various times, ranging between 5 minutes and 24 hours.
If you are still having the problem, either of the following is causing the problem:
  1. DM Board Capacitors have FAILED
  2. Power supply failure
  3. EEPROM Board failure
If the capacitors are bad on the DM board, you can replace it by yourself and save a couple of bucks. The capacitors will cost you about $4 or less compared to $200 when you ask a technician to do it for you. Just insist that the 4-1000uF, 16V capacitors be replaced They usually insist to replace the DM board and cost you $500-$800. These are the capacitors on the DM board with the bulge indicating they are bad.
cc7fdd1.jpg

Same thing with the power supply. You can check the filter capacitors for this kind of problem.

Please let me know if you decide to do the repair yourself and need the guidance to do it.


Nov 30, 2009 | Televison & Video

1 Answer

MITSUBISHI WS-73909 will not turn on 1. I have a Mitsubishi Big screen TV model no WS-73909. Few days a go the city power went out when the TV was off. The TV had a surge protector. Then the TV will not go...


Are you a Quailified Technician ? Because this repair is not for the novice. The best thing I can tell you is contact a Mitsubishi Authorized repair center or tell me what area you live in and I can find one for you. cost is 250-350 to repair.

Apr 10, 2009 | Mitsubishi WD-65000 65" Rear Projection...

1 Answer

Blink green light of death - mits ws55613


you can get the repair kit which contains the replacement capacitors and the CD which includes detailed photos that show and explain how to do the repair, and the cD even contains the full service manual with full schematics manual as a bonus. Heres the link to the proper DM kit for your model.your model is the V23 chassis.
http://servicemanuals.vstore.ca/product_info.php/pName/mitsubishi-v23-dm-repair-kit/cName/repair-kits

Jan 24, 2009 | Mitsubishi WS-55513 55" Rear Projection...

1 Answer

Mitsubishi WS 55809 Rear projection TV


http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm
http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf
http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair
http://hdtvoice.com/voice/showthread.php?t=32186
replace DM

Picture of bad caps
http://www.auctioncreations.com/wd62525a.JPG

The DM board is the one with the digital connectors on the back panel. If you already have it appart, you may as well check the caps on all of the boards. The caps that go bad are typically Jamicon brand caps in 1000 uF and 330 uF values. There are also a couple of 3300 uF caps in the PS that cause problems.

Jan 16, 2008 | Mitsubishi WS-55513 55" Rear Projection...

2 Answers

65" Mitsu with 55" DM ?


I would go for changing the capacitors I have seen many that have the same scenario.95 % of the time it falls back to capacitors being bad on the board. I have also seen alot of boards interchanged in the projection units. Has it ever been in for service? If so was it performed byan authorized mitsubishi repair shop?

Jan 03, 2008 | Mitsubishi WS-55513 55" Rear Projection...

1 Answer

Nothing works


You will need the DM module repaired....requires replacing
four 1000mf 16v 105 degree capacitors with a bit higher
voltage = 25v or 35v.....if too tall, lay them over 90 degrees on
to board.....there are many entries concerning DM module
rebuild...........if you need further assist,let me know...T.

Dec 30, 2007 | Mitsubishi WS-55513 55" Rear Projection...

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