Question about Mitsubishi WS-55859 55" Rear Projection Television

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Mitsu WS55859 same flashing green light. Service expects DM board needs replacing - quoted over $1,000. Please send me details of fix. thanks, R. Hendriks I have the same model and same problem. The green led flashes constantly and tv will not come on. I have unpluged the tv and tried the reset button all to no avail. I have called the customer service line and was told to do exactly what I had already done. Nothing helped. Also, where can a person get a set of schematics for this tv model? Help! dmurg99@yahoo.com

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The regular manual can be found at the following link for free

http://fileshare.eshop.bg/downloadsm/31774/Mitsubishi_WS-55859.html


The schematic can be found at the following link, to access it you must register for 6 Euros for one day which you can then download and print as much off the website as you want.

http://www.nodevice.com/manual/newmans/V19_Service_Manualpdf/get15993.html

By registering you can also get the service manual found at the link below

http://www.nodevice.com/manual/newmans/V19_Service_Manualpdf/get15993.html

Please let me know if you need any further help and I would be glad to assist.

Thank you for using Fixya and Good Luck to you

Posted on Apr 19, 2008

  • Benjamin Patri
    Benjamin Patri Apr 19, 2008

    If you let me know how many times the green light flashes, I may be able to narrow down the problem for you

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It needs the contacts cleaned take off the the back blow it out with can air or air compressor(be careful with a air comp. though)
make sure there is no dust on the contacts of the buttons on the front panel

Posted on Apr 19, 2008

  • 3 more comments 
  • Maanita Chadha
    Maanita Chadha Apr 19, 2008

    ok is in shut down mode kine of proteccion some of the fuses are pico
    fuses but you may have problem with convergence IC's that what I' check
    first if that is ok go to HVT

  • Maanita Chadha
    Maanita Chadha Apr 19, 2008

    work around convergence check voltage to convergence IC's if is ok,

  • Maanita Chadha
    Maanita Chadha Apr 19, 2008

    try unloading convergence yokes and and turn tv on if it turns on then its the problem with convergence IC's.

  • Maanita Chadha
    Maanita Chadha Apr 19, 2008

    1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY
    C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER
    PCB (NOT SHOWN IN THE SCHEMATIC). 2. SHUTDOWN AT POWER WITH SELF
    DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART #
    283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE
    CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS
    INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020
    (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB

  • Maanita Chadha
    Maanita Chadha Apr 19, 2008

    Download the service manual from the following link this might help you too.

    http://www.chrisandnat.com/Projects/Blin...

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2 Answers

Green light flashing in the front ?


SLinteriors posted this on another page and saved me big bucks.

Here's a bit more detail:

The flashing green timer light after a lightning storm seems to be a very common problem with old Mistubishi rear projection TV's. A friend and I had the exact same problem.

Using this and other sites, I spent $36 bucks and a little time with a soldering iron to replace the capacitors on the DM board and got mine up and running (WS55859). I've never really worked on electronic circuit boards before, but the helpful advice at these sites got me up and running. Definitely check it out before you hire someone or replace your TV:

Repair Kit with instructional CD available at:
http://www.tvrepairworld.com/mitsubishi_repair_kits
for under $40 plus shipping.

Discussion of process in detail at:
http://www.hometheaterspot.com/showtopic.php?tid/137881/
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Your power source seems to be the problem, replace the part (located inside the television) and the problem will be solved.

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If replacing the 7 caps doesn't work I then try to re-solder the small 8 pin ICs. Be very careful and try to avoid cooking it or leaving a solder bridge. If that doesn't work either you'll have to replace the DM-POWER board. You'll beed a Mits authorized service center to order the part. Goodluck.

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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: http://www.hometheaterspot.com/fusionbb/showtopic.php?tid/137881/

I hope this helps.

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the capacitors on the DM need to be replaced. Very easy repair you can get the repair kit at this link which is for your model it contains the replacement capacitors and step by step insturctions.
http://servicemanuals.vstore.ca/product_info.php/pName/v21v19-mitsubishi-dm-repair-kit/cName/repair-kits

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Good Day, charliek1;
This a very common problem with model. Don't listen to other comments unless the use the correct replacement parts.

SYMPTOM: Power LED does not stop blinking after plug in.

CURE: replace C9B01, C9B02,C9B10, and C9B11 (1000 uFD 16V) on the DM PCB. Replace them with part # 181P734030 (680uFd 16V).

The DM Board (PCB) is located on the very left side of the TV looking from back. Caution on removing Board and note what cables you disconnect to access the Metal Shielded Board.
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