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s42ax-yb09 no audio no video

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    s42ax-yb09 no audio no video

    I would like to fix this myself but have limited experience with this sort of thing. can read a meter and have patience. That said tv has no video or audio. after pushing power button can hear 3 sets of relay clicks from power supply, standby led goes from red to blue. and Va voltage starts low and quickly deteriorates to zero no voltage recorded on Vs or vscan .I found shorted y buffer and replaced. Any advice to help isolate bad components would be helpful .thanks in advance.

    #2
    Re: s42ax-yb09 no audio no video

    some pics of components
    Attached Files

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      #3
      Re: s42ax-yb09 no audio no video

      Hmm--It would have been better if you had titled the thread with the Make and Model number--rather than the PDP Glass number.

      Looks like a Samsung PS-42C450--but cant tell as the pictures will not enlarge.....

      I expect you have shorts on the IGBT's of either the Y-SUS, X-SUS or (On That model set) Both!
      TELEFIX

      How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
      http://www.irf.com/technical-info/appnotes/an-1088.pdf
      PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

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        #4
        Re: s42ax-yb09 no audio no video

        sorry 42pa30rq. Can you supply a good link for determining which one or both are faulty?
        Last edited by 1sportsman; 04-16-2015, 11:33 AM. Reason: incomplete

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