i want to learn how to fix plasmas, please help

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  • mattstolte
    Badcaps Veteran
    • Dec 2013
    • 612
    • usa

    #1

    i want to learn how to fix plasmas, please help

    I have a lg plasma, I have fixed many lcds buy no plasmas. This tv had a blown fuse on y sus, it has 2 fuses on that board. 1 was blown, I replaced it and it turns on but no picture. On screen where y sus is, it has like fuzzy stuff on screen. But I. Figure there a component on y sus board that I can fix? What should I look for? I don't know how to check the 3 legged mosfets. So any help will be well appreciated.
  • tw2005
    Badcaps Legend
    • Oct 2011
    • 6457
    • Australia

    #2
    Re: i want to learn how to fix plasmas, please help

    Originally posted by mattstolte
    I have a lg plasma, I have fixed many lcds buy no plasmas. This tv had a blown fuse on y sus, it has 2 fuses on that board. 1 was blown, I replaced it and it turns on but no picture. On screen where y sus is, it has like fuzzy stuff on screen. But I. Figure there a component on y sus board that I can fix? What should I look for? I don't know how to check the 3 legged mosfets. So any help will be well appreciated.
    I think I'd post some pictures of the setup, the fault and the model to help everyone identify if it's a common fault.

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    • Alastair E
      Chief Womble
      • Mar 2013
      • 1963
      • U.K.

      #3
      Re: i want to learn how to fix plasmas, please help

      Check out the Application-Note in my sig.

      It gives a fair idea on how a plasma screen functions. Its much better than any maker's info as it hasnt been poorly written--Then translated to English!
      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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