Question about Mitsubishi WS-55809 55" Rear Projection Television

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Wont turn on. on light comes on for 5 seconds then shuts off

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Do the self check this model has.

When power light goes off on the front of the set press and hold both the menu and input (device) at the same time and hold for at least five seconds and release both buttons.

The power light will blink a two digit error code: like 2 blinks, 2 blinks, a pause and then repeat it several times.

Let me know by leaving a comment here what code you find and I will tell you what it means.


Posted on Jan 01, 2011

  • 1 more comment 
  • jrsmith28 Jan 03, 2011

    2 blinks pause 2 blinks

  • SD Tech
    SD Tech Jan 03, 2011

    98% chance one of the two pico fuses that protect the convergence circuit is blown, set detects no voltage and 2-2 is short protection.

    See attached photo of fuses

    The model indicated uses two of the STK-392-570 Convergence chips, both and the fuse will have to be replaced, best way is to remove middle board.


    Total parts cost on Ebay would be under 30 dollars!

    The instructions tell you everything you will need and exactly how to do it, it involves getting at the chips and being able to solder.

    Look at photos and if interested we will find a way to email the instructions to you for free.


    First photo shows some resistors in front of chips that need to be looked at, easy.

    Second photo shows the fuses, note the two circled, they are to be looked at first, one will be open or bad.

    Third photo shows a typical chip, yours would have the STK-392-570 numbers on them, your model indicated uses two chips, both and the fuse must be replaced.

  • abergop Apr 15, 2011

    this is exactly my problem--have been looking online for a solution for hours. please send instructions to abergop (at) yahoo (dot) com

    thank you!!!



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