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Mitsubishi WS-65903 convergence problem

Discussion in 'Electronic Repair' started by L, Apr 22, 2005.

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  1. L

    L Guest

    The TV is a Mitsubishi 65" wide screen HDTV Projection set. Model
    WS-65903. It's about 5 years old.

    The original problem was a blue shadow about 4 inches to the right.
    Seemed like a typical convergence problem as we'd done a couple of
    very similar models recently. Never a call back.

    Upon inspection of the Power Supply /Convergence board, there were the
    typical broken solder joints on the two STK392-040 I.C. modules
    which control the convergence correction. I ordered replacements put
    them in and put the chassis back in the set. The picture looked
    perfect

    About a week later I got a call back. Same problem with the blue. Now
    I don't see anything apparently wrong in the circuit, but I don't
    just want to replace the modules, because I'm afraid they'll fail
    again.

    Looking for a schematic , service manual etc.

    Also, if anyone has any suggestions or experience with this set I'd
    appreciate any help.

    Regards, Larry

    you can email me at
     
  2. kip

    kip Guest

    Get the STK,s from Mitz as its very possible you
    replaced the STK,s with cheap Chinese ones.!!


    kip
     
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