Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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Mitsubishi power board pcb post

I just read your comments and checked the outstanding pics of the power board and believe i have the same problem...you could help me a great deal if you could pinpoint the exact location of the power board. to replace C9A51-52-37-38 etc.
i have the caps and a general understanding of the removal process, but, again the pcb location??
thank you for any assistance

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  • shinsatob Sep 29, 2008

    I need to know where to get the replacement parts to fix this problem, and I need to know what they look like. I just called a repair guy and they said it would cost me about 400 to fix it. Plus 80 for them to tell me the problem.



    E-Mail me at

    shinsatob@rush-enterprises.com

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Good day, steve sc;

The DM board is normanlly on the left side TV looking from the back. It has a shield around it, remove. The caps are big and black, they look the replacements(only ones on board). Here's what says about this issue:

If the LED keeps blinking with connector FC removed suspect a problem on the DM PCB (part # 934C116002). (LED does not stop blinking after plug in) On the DM
Good Luck, big IRISH. ps hope this helpful!
PCB (part # 934C116002) check C81A2, C81A3, C81B3 and C81B4 (1000 UFD, 16V, 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). (LED does not stop blinking after plug in) On the FMT PCB (part # 930B924002) check C8F19, C8F21, C8F22, and C8F27 (16V 1000 UFD 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C).
It is not an easy job, it will take some time but since you have it apart there is another problem that will accure so might as well do this too:
Tile or block pattern with no video or OSD. Check D8F00 and D8F01 part # 264P828010, also check C8F26 and C8F29 part # 141P148000 (1 uFD, 25 V) on the FMT PCB (part # 930B924002).
All the parts have location numbers like C8F29 that will tell you what and where these parts are.
Good luck, big IRISH.

Posted on Jul 19, 2008

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Mitsubishi wd-y577 blinking green timer light doesnt stop blinking ever. Replaced all caps on pcb and dmb. Unplugged dvi board and still flashing. When power is pressed after aural response that bulb is...


It's possible that you have a fried diode on the secondary side of one of the power supply transformers. Look for one that reads like a wire on an ohmmeter. Note that some diodes come in TO-220 packages so they look like plastic power transistors. (Don't be fooled by capacitor bleeder resistors - if present, these are in the tens to hundreds of ohms, so this is what you will read instead of the diode if the diode is good.) The whistling noise could be a switching power supply transformer with an overload as a result of the diode, although the primary-side power controller circuit should shut down immediately before letting that happen. It could also be coming from the speakers - that would be a hint to check the power supplies feeding the audio circuits.

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I need help


Solution #1 posted on Aug 05, 2008 0%20stars.png

Good Day, RONALDSADAT;

You and a million others are having this problem. Are you handy? Did you say; yes/kind of?

HERE IS THE SOLUTION FOR THAT PROBLEM AND THE ONES YOU WILL HAVE IN FUTURE:

Replace C81A2,C81A3, C81B3 AND C81B4 (1000uFD, 16 V) On DM PCB.
Replace C8F19, C8F21, C8F22 and C8F27 (1000uFD, 16 V) On FMT PCB.
Replace C9A51, C9A52, C9A61, C9A62 On power PCB.

REPLACE ALL WITH (680uFD, 16V, 105c), part number 181P734030.

Replace C9A37 and C9A38 ON POWER PCB. (3300uFD, 16 V).

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

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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.
Good Luck, big IRISH.

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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.
Good Luck, big IRISH.

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

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Good Luck, big IRISH.

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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.
Good Luck, big IRISH.

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

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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.
Good Luck, big IRISH.

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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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