Q: is there a standard method to check a plasma screen?

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  • loadedboyuk
    Member
    • Feb 2014
    • 26
    • uk
    #1

    Q: is there a standard method to check a plasma screen?

    Q: is there a standard method to check a plasma screen?

    Is there any way to check if a plasma screen has gone bad?
    I have tried to repair a LG plasma which has no picture but I dont know how to check if the screen itself is still ok.
    Tags: None
    • Alastair E
      Chief Womble
      • Mar 2013
      • 1963
      • U.K.
      #2
      Re: Q: is there a standard method to check a plasma screen?

      Well--Its difficult....

      Apart from obvious cracks, a set in otherwise good (working) condition with a PDP down to air,--will Buzz quite loudly if the PDP (Screen) is bad.

      Other faults include mal-discharge (Very common on LG)--red/green spots, sections of picture missing, can be a number of issues--But Generally--a Blank/lifeless screen--Isnt one of them!

      LG with no pic--what model? Common for IPM's to fail on 42/50PC1/3DA/ similar with the X3 chassis....
      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!

        Comment

        • loadedboyuk
          Member
          • Feb 2014
          • 26
          • uk
          #3
          Re: Q: is there a standard method to check a plasma screen?

          Its a PS50C55. THE y-buffer board was showing earthed down, and the controller board was flashing every 5 seconds so I changed y-sus and buffer, but after 3 seconds with power on, it looked like the Y-buffer had another flash across it and the picture went off again. this is the 3rd LG i have had with no picture fault.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Q: is there a standard method to check a plasma screen?

              There is no standard method as far as I'm aware. Never heard of PS50C55 LG. That sounds like part Samsung code. Maybe LG 50PC56?
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

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