LG Plasma 42PJ350-ub wont power on

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  • cuestaj1707
    Member
    • Sep 2012
    • 24
    • usa

    #1

    LG Plasma 42PJ350-ub wont power on

    I"m working in this set that not power on and is not Vs or Va present,replaced power supply and still the same any ideas guys.
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: LG Plasma 42PJ350-ub wont power on

    Unplug Y-sus and Z-sus, then see if it powers up.
    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

    • cuestaj1707
      Member
      • Sep 2012
      • 24
      • usa

      #3
      Re: LG Plasma 42PJ350-ub wont power on

      I did and i have the same not power.

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: LG Plasma 42PJ350-ub wont power on

        OK, by no power, what do you mean? Does the power LED come on? Do the relays click? Do you have voltages Vs and Va?
        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

        • cuestaj1707
          Member
          • Sep 2012
          • 24
          • usa

          #5
          Re: LG Plasma 42PJ350-ub wont power on

          Originally posted by tom66
          OK, by no power, what do you mean? Does the power LED come on? Do the relays click? Do you have voltages Vs and Va?
          power let is red,relays click and no Vs and Va,I replace power suplyy and still the same

          Comment

          • cuestaj1707
            Member
            • Sep 2012
            • 24
            • usa

            #6
            Re: LG Plasma 42PJ350-ub wont power on

            Any idea Tom 66?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: LG Plasma 42PJ350-ub wont power on

              On the control board, do you see two points marked EXT AUTO GEN?
              How about some pictures of the boards? I don't have this TV in front of me.
              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

              • cuestaj1707
                Member
                • Sep 2012
                • 24
                • usa

                #8
                Re: LG Plasma 42PJ350-ub wont power on

                PROBLEM FIXED.

                I replace the power supply and still not turn on,after i order A board instaled and tv back to live.

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #9
                  Re: LG Plasma 42PJ350-ub wont power on

                  But LG don't use "A" boards.... Do you mean the main board?
                  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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