Lg 50pq30

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  • pposey
    Senior Member
    • Oct 2012
    • 60
    • USA
    #1

    Lg 50pq30

    Hi. Let me just start with what boards i have replaced. I have replaced the y-sus, z-sus, control board and lower buffer board.

    I have sound but no picture unless i remove the bottom buffer board completely. Then on the top half of the tv i have picture but has vertical black lines across it but still see the static screen in the back. So thats when i bought the new buffer board but when i put the new one in there still wasnt a picture but has sound. I have no clue what it could be. Im thinking something on the bottom part of the y-sus where it plugs it but i may be completely wrong. Thank you for your help!

    Tags: None
    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA
      #2
      Re: Lg 50pq30

      Your upper buffer board may in fact be toast. The lower will not display a proper picture without the upper installed as the data has to go thru the upper to get to the lower.
      Did I leave the soldering iron on?

        Comment

        • pposey
          Senior Member
          • Oct 2012
          • 60
          • USA
          #3
          Re: Lg 50pq30

          wow. so i bought the wrong buffer, that sucks. Thanks for the quick reply. I guess ill buy the upper. If that doesnt work i guess ill part it out. Thanks again for your help.

            Comment

            • freakaftr8
              Badcaps Legend
              • Oct 2012
              • 3743
              • USA
              #4
              Re: Lg 50pq30

              Scratch that. Your lower is bad I meant. Did you buy the lower new or used off eBay that was stated as tested?
              Did I leave the soldering iron on?

                Comment

                • pposey
                  Senior Member
                  • Oct 2012
                  • 60
                  • USA
                  #5
                  Re: Lg 50pq30

                  Bought it out of a new tv that the screen was damaged during shipping.

                    Comment

                    • pposey
                      Senior Member
                      • Oct 2012
                      • 60
                      • USA
                      #6
                      Re: Lg 50pq30

                      Originally posted by pposey
                      Bought it out of a new tv that the screen was damaged during shipping.
                      You think it is the y-board again or is it something else? Anything i can test?

                        Comment

                        • Glitcher
                          Badcaps Veteran
                          • Mar 2013
                          • 673
                          • USa
                          #7
                          Re: Lg 50pq30

                          You can test for shorts on the buffer board similar to the Samsung buffers. If you bought it from a panel with the cracked screen chances are the buffer may be bad. Buffers usually go bad once screen is cracked and power goes through it.

                            Comment

                            • pposey
                              Senior Member
                              • Oct 2012
                              • 60
                              • USA
                              #8
                              Re: Lg 50pq30

                              Originally posted by Glitcher
                              You can test for shorts on the buffer board similar to the Samsung buffers. If you bought it from a panel with the cracked screen chances are the buffer may be bad. Buffers usually go bad once screen is cracked and power goes through it.
                              Thanks for the quick reply. I tested for shorts on both the original buffer board and the one i bought. Niether one of them had shorts. Does that count them out as being bad or can they still be bad?

                                Comment

                                • pposey
                                  Senior Member
                                  • Oct 2012
                                  • 60
                                  • USA
                                  #9
                                  Re: Lg 50pq30

                                  Anybody else have a idea on whats going on or had the same problem? i really dont want to part this out if i dont have too.

                                    Comment

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