lg plasma pc3dv powers on no picture

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  • yankys
    yanky
    • Feb 2012
    • 139
    #1

    lg plasma pc3dv powers on no picture

    HI, everyone I have a 42 inch lg plasma that had no power (because it had bad caps on pws) I bought the kit replaced them. Now I have power and sound but no picture. The sticker state VS-183 and the meter reads 183.1, VA-60 shows 59.6 and 5v is 4.97. I'm not sure if these reading are sufficient, but if they are what do I need to check next to help find the issue? Below I have attached some pictures. If you need more information please let me know. Thanks in advance for all your help.
    Attached Files
    Tags: None
    • Malachi
      Badcaps Legend
      • Dec 2015
      • 1077
      • Usa
      #2
      Re: lg plasma pc3dv powers on no picture

      I had the caps replaced on my 50pc3d. Then it turned on, sound but no picture. Just this weekend.
      They told me here it was most likely the Ysus board.

        Comment

        • yankys
          yanky
          • Feb 2012
          • 139
          #3
          Re: lg plasma pc3dv powers on no picture

          did you get any advice on how to check to see if the ysus board is bad.

            Comment

            • yankys
              yanky
              • Feb 2012
              • 139
              #4
              Re: lg plasma pc3dv powers on no picture

              Originally posted by yankys
              HI, everyone I have a 42 inch lg plasma that had no power (because it had bad caps on pws) I bought the kit replaced them. Now I have power and sound but no picture. The sticker state VS-183 and the meter reads 183.1, VA-60 shows 59.6 and 5v is 4.97. I'm not sure if these reading are sufficient, but if they are what do I need to check next to help find the issue? Below I have attached some pictures. If you need more information please let me know. Thanks in advance for all your help.
              Also checked all the fuses and all of them are good Ysus and PSW.

                Comment

                • yankys
                  yanky
                  • Feb 2012
                  • 139
                  #5
                  Re: lg plasma pc3dv powers on no picture

                  Ok I rechecked the Ysus board and one of the two fuses are blown.

                    Comment

                    • Alastair E
                      Chief Womble
                      • Mar 2013
                      • 1963
                      • U.K.
                      #6
                      Re: lg plasma pc3dv powers on no picture

                      Y-SUS IPM short.
                      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

                        • yankys
                          yanky
                          • Feb 2012
                          • 139
                          #7
                          Re: lg plasma pc3dv powers on no picture

                          Alastair E) thank you for getting back to me I have order a Ysus board so hopefully this will correct the issue. I"ll post back when the board comes in.

                            Comment

                            • yankys
                              yanky
                              • Feb 2012
                              • 139
                              #8
                              Re: lg plasma pc3dv powers on no picture

                              Installed the replacement ysus board and still no picture one the inverter boards had a resistor getting really hot to the piont it was glowing red. here a pic of the one that was getting hot R12.
                              Attached Files

                                Comment

                                • ReeceyBurger123
                                  Never Give Up !
                                  • May 2014
                                  • 7325
                                  • Britain
                                  #9
                                  Re: lg plasma pc3dv powers on no picture

                                  Shorted buffer Ic, replace whole buffer board.
                                  Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                  https://www.facebook.com/Telford-Tel...7894576335359/

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