Question about Mitsubishi WS-55511 55" Rear Projection Television

1 Answer

Tv won't come on

Mitsubishi tv won't come on with remote or power button on tv

Posted by on

  • unfolded Oct 19, 2008

    Where did you locate the repair kit and instructions? Do you have contact info or a weblink?



    thanks in advance

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1 Answer

I found this bit helpful (look at my comments at end):

My Mitsubishi WS-55613 (55" rear-projection HDTV) died Saturday, just when I tried to turn on the UNC/Kentucky game. It was exhibiting what I'd seen described before (found at another online HDTV forum) as what appears to be a very frequent problem that occurs in Mitsubishi rear-projection widescreen HDTV's, referred to as "The Blinking Green light of Death". This refers to the green LED on the front panel of the TV that normally blinks when turned on after a power failure or when unplugged: the green light is supposed to flash for about 1 minute while both microprocessors boot up: If it won't stop blinking it means that they aren't communicating w/each other, and you ain't got no TV to watch... tv won't come on - frown.gif

About a year ago, I'd noticed and saved an article describing this issue, along with a repair procedure to replace the four (apparently inadequate) 1000uF/16 volt power supply capacitors in the "DM module" (one of the two onboard microprocessors). These capacitors are apparently undersized, in that they will eventually fail (usually after about 3 years) if and inevitably when there are voltage fluctuations in the circuit above 16 volts. (If you Google: "Mitsubishi + Blinking Green Light of Death", it's amazing how many other Mitsubishi rear-projection TV owners have experienced this problem.) It is recommended to install either 1000uF/25 volt or 1000uF/35 volt capacitors as replacements, so that they will be more than ample to handle any voltage spikes that will occur.

Since I have little/no experience repairing printed circuit boards, I was a bit intimidated to try this on my own, but was motivated by the one person at that forum that said he'd had to pay $600+ for the replacement DM module his set needed, along with about $150 for installation.

I went online to another HDTV forum and this time found two similar "fix" articles describing the same problem and correction, and one of these articles came complete with photos depicting the repair procedure. This led me to believe that this might actually a legit repair, as others had posted that they'd successfully repaired their TV's w/this procedure. On Sat. night I went to Radio Shack, bought the (4) 1000uF/35 volt capacitors recommended as replacements (they were out of the 1000uF/25 volt caps), and after taking the back of the TV apart and removing the faulty DM module, got my girlfriend Rene to help hold the DM module's printed circuit board while I desoldered the old capacitors and installed the new ones. (She was a remarkably patient assistant, I might add...)

Much to my dismay, after getting the TV put back together enough (I thought) to test it at about 12:30 a.m. Sunday, it would still not work, and exhibited the same "Blinking Green Light of Death". I went to bed VERY disappointed... crying.gif

Sunday morning, I set about taking it BACK apart, to see if I'd done something wrong or left something disconnected. I then realized that since I'd not installed the back cover plate for the DM module, which has (apparently critical!) grounding straps essential to the proper functioning of the DM module - the DM was not getting proper grounding. error.gif My brother, (who is an electronics tech for a local LED lighting manufacturer) came over before I reassembled the TV and also found a couple of "solder bridges" on a couple of the DM's printed circuit board components (sloppy soldering), which he feels might have also contibuted to the failure of the original power supply capacitors. I put it all back together again, plugged it in, and it fired right up!

NOTE:
I went ahead and ordered a full kit online. Came with service manuals for the set and detailed pictures of how to do the repairs. Took me about 2 hours, but my Mitsubishi is up and running! contact:
servicemanuals13@gmail.com

Posted on Oct 10, 2008

3 Suggested Answers

  • 1 Answer

SOURCE: mitsubishi 1080 series, ws-65311 model

Same problem.. Checked the fuses but they're fine no reset switch to be found.

Posted on Nov 27, 2008

  • 1 Answer

SOURCE: constant blinking green power light but doesn't turn

This is from my WS65907 service manual.

4. Self Diagnostics
The “Power ON LED” provides an indication of the sets operation, and the possible cause of a malfunction.
1. Initial Control Circuitry Check
Immediately after the TV is connected to an AC power source:
• The LED flashes three times ... indicating the Microprocessor has initialized and is functioning
properly.
• If the LED does not flash ... the Microprocessor is NOT functioning.
2. Error Code Operational Check
Pressing the front panel “INPUT” and “MENU” buttons at the same time, and holding for 5 seconds,
activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem
has occured since the last Initalization.
Note: The front panel buttons must used, NOT those on the Remote Control.
• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.
• The flashing then pauses for approximately 1/2 second.
• The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.
• The Error Code is repeated a total of 5 times.
Example: For Error Code is “24”, the LED will flash 2 times, pause, and then flash 4 times.
3. Error Codes
The Error Code designations indicating a malfunction, or no malfunction, are listed below:
“12” ... indicates no error has occured.
“21” ... X-Ray Protect circuit.
“22” ... Short Protect circuit.
“23” ... Horizontal Deflection failure.
“24” ... Vertical Deflection failure.5. Circuit Adjustment Mode
Most of the adjustments can only be performed using the remote hand unit. Many of the adjustments must
be performed in both the NTSC and HD modes. Video/Color adjustments must be performed in the NTSC
and HD modes, and data must be preset in the 480P (DVD) and VGA modes.

Posted on Apr 08, 2009

Slinteriors
  • 8617 Answers

SOURCE: Mitsubishi TV green flashing timer light after power outage.

You will need to cahnge the capacitors on the DM board, very common problem. The V21 V19 DM repair kit at the following link contains the replacement capacitors and detailed instructions. Its listed under the repair kits catagory at the following link.
http://servicemanuals.vstore.ca/

Posted on Aug 29, 2009

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First: remove front speaker grill (IT PULLS OFF) AND remove inspection plate behind it; look for the two bundles of wires coming down and to the right from the front keyboard of the set.

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