Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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Mits 52525 blinking green light

Replaced four caps on DM board and a few others for good measure. No luck. 30yr old Sears CRT working great.

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  • ctonef15 Jun 13, 2008

    There are only the 4 caps on this board. Symptoms b4 and after exactly the same...boot-up blinking green...never stops.

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There are also 4 caps on the formatter board that will cause this symptom . they are the same value as the dm board. while your at it check the 2) 3300 mf/10v caps on the power supply board.

Posted on Jun 18, 2008

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Good Day;

If you only changed 4 caps,1000 ucfd 35v, it should be 5, if you did not remove the little plug in board, e prom, you may have damaged that. B-4/after changing caps what is the indicator light, green, doing?

Does light stop? Please rtn with more info.

Posted on Jun 13, 2008

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Want to replace caps which board is the DM board?


Once you take the shield assembly off, you will see a board, I believe it is the DM Board board. There are four Capacitors grouped together probably rated at 35v 1000 mfd, 105 degree. They should be replaced with 35v 680mfd,105 degree Capacitors. Now once that is done, there is another board under that one. This is the Format Board. It also has 4 Capacitors that should also be replaced. They are the same value as the first Board and should be replaced with the same 35v 680mfd, 105 degree Capacitors.
Please note the Flex connectors at the bottom of the DM and Format Boards. They may not be available from Mitsubishi any more so be gentle with them and make sure the are installed properly when reinstalling the Boards back into the chassis. There is one other Board you should look at. The Power Supply Board is the board on the back of the chassis and also has a number of Capacitors that fail. Most all of the Capacitors that fail through out this chassis will have bulging tops. So any you see bulging, you should replace whether they are on the DM, Format , or Power Supply.
I hope this helps,
Skyassoc

Jan 07, 2010 | Mitsubishi WD-52725 52". Rear Projection...

2 Answers

Picture


Faded pictures it is caused by leaky or short capacitor it could also be power supply problem causing the optic engine and light not to work correctly, or you could have a bad DM board, or a bad light engine sounds like a bad DM board find six of the fourteen known-problem caps to be visibly bulging -- both 3300s and two of the four 1000s on the PWR PWB plus two of the four 1000s on the FMT PWB (see photos below). Ironically of the four 1000s on the DM PWB, which I have heard are the most common to go bad, were bulging and I considered skipping these as the DM it is the toughest board to extricate from the chassis, however I figured I had come this far and I would just as soon replace all twelve 1000 uFs as the parts cost $0.23 and I really never want to have to do this again.

If I had to bet, the two 10V 3300uF caps on POWER board, which were actually leaking black goo, are the actual culprits, but with four of the 1000 uFs also bulging it is probable only a matter of time until they failed as well.

Here is the POWER PWB with the known-problem caps (C9A37, C9A38, C9A51, C9A52, C9A61 and C9A62) highlighted:
a99678f.jpg
here's the FMT PWB with the known-problem caps (C8F19, C8F21, C8F22 and C8F27) highlighted:
7826ab5.jpg

and the DM PWB with the known-problem caps (C81A2, C81A3, C81B3 and C81B4) highlighted:
a158dce.jpg
Here are close-ups of the bulging caps (C9A37, C9A38, C9A52 and C9A62) on the POWER PWB:
bb3e69c.jpg
76dcd23.jpg
9e2c246.jpg
And here are close-ups of the bulging caps (C8F19 and C8F27) on the FMT PWB:
55cd11f.jpg
1a03490.jpg
Hope it may help you; Regards;
VOTIT

Jan 29, 2009 | Mitsubishi WD-52525 52" Rear Projection...

2 Answers

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...

2 Answers

Blinking Green Light


check ur dm board it could have caps as well

Dec 09, 2008 | Mitsubishi WD-52525 52" Rear Projection...

5 Answers

MITSUBISHI 65 INCH HDTV, GREEN LIGHT BLINKING, WILL NOT POWER UP


There are four (4) caps on the 'DM' board that need to replaced. Parts: 680ufd 16 volts, orig are rated at 1,000 ufd.

Nov 01, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Dm board (power supply) for mitsubishi rear projection tv (ws-55807)


Good day,

mohiuddin;

If the indicator stays on then you may have an DM PCB problem and to correct this do the the folowing:

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.
Good Luck, big IRISH.

Jul 22, 2008 | Mitsubishi WS-55807 TV

2 Answers

Mitsu wd-52628 green flashing timer/power light


steady blinking is the DM failing to complete the boot sequence. Your more than likely needing the DM repair kit.

Jun 18, 2008 | Mitsubishi WD-52628 52" Projection HDTV

1 Answer

Mitsubishi WS-65513 light blinking


If the light continuously blinks, there are four(4) caps, 10000upf @ 35v that are bad on the DM board. The board is on the right side of the chassis, looking from back, the caps will be swollen on the top. The repair is more cost effective then replacing the board.

Mar 12, 2008 | Mitsubishi WS-65513 65" 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

Help my ws-55511 can anyone help me with this.


Changing caps on DM board is good prevent maintenance,

 but does not represent the solution...DM caps symptom is

 Continuos blinking light.

 

 See    " problem 351"    On 10/20   WS 55908  comments.

  Let me know....T.

May 16, 2007 | Mitsubishi WS-55511 55" Rear Projection...

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