Question about Mitsubishi WS-65807 65" Rear Projection Television

1 Answer

Attempt to turn on greenlt comes on for 2 secs then shuts off

Thre was no warning. Unplugged for hours no results.

Air blown then vacummed no results.

No leaks on circuit board.

Which portion of circuit board is most likely in need of repair?

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  • rdbjrmd Sep 07, 2009

    Thank you very much

    2 blinks pause and 2 blinks.

    Where on the board is most likely the problem?

  • rdbjrmd Sep 07, 2009

    Thank you! The pico fuses "look" okay. I may have ordered the wrong chips today, the STK393-040. Where are you located? Otherwise I think i will attempt repair myself. Many thanks

  • rdbjrmd Sep 07, 2009

    I am interested in your step by step instructions.I have managed to remove the circuit board. I am ordering the correct chip. stk393-570

  • SD Tech
    SD Tech May 11, 2010

    etower.766@netzero.net

  • SD Tech
    SD Tech May 11, 2010

    If it is a Mitsubishi WS-65807 IT uses two STK-392-570 CHIPS; the fuses can be tested just like a normal fuse; I am in San Diego, California

  • SD Tech
    SD Tech May 11, 2010

    WS-65807? if green light comes on for a moment and goes off--engage the sets self check: hold on the front of the set MENU and INPUT buttons for 5 seconds and release---set should blink a 2 digit error code(power light) for example ---2 blinks, a pause and 2 blinks---it will repeat it about 10 times--let me know what the error code is and I will tell you what you have---2, then 2 is the most common SD TECH

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WS-65807?The most likely problem is one or both of the fuses that protect the 2 convergence chips are blown. The set detects no voltage and shuts down. This set uses 2 stk-392-570 convergence IC's; I have step by step start to finish instructions for this repair along with photos that show the fuses and protect resistors.

If you can do the repair yourself---the fuses (called pico fuses) should be checked first---if either of the 2 for the convergence circuit are blown---you have to replace them and BOTH chips.

If you are not able to do this repair yourself, find someone in your area who has done this kind of repair; any good tech can do this repair in your home--takes about an hour. Most shops will try to charge 300-400 for this repair-----I do lots of them here for 200-250 total. If a shop says it "has to go to the shop", keep looking.


I do this here for free so if this information has been helpful take a minute to give me a vote here.

If you have any questions reply to this post.

Posted on Sep 07, 2009

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