lg 47lv4400UA lines on screen

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  • tocold4u2
    Badcaps Veteran
    • Dec 2012
    • 284
    • usa
    #1

    lg 47lv4400UA lines on screen

    i just had a lg 47V4400ua it has lines on screen and they run
    from top to bottom .some lines are real thin and some are 3" thick
    most lines are grey/black.a few real thin lines are red and maybe blue
    tv powers on from buttons screen lights up. it wont change channels
    or if i hook up a dvd player there is no sound orpicture from movie.
    is this a bad pannel or main board ??
    will post a pic of boards. tried to reseat ribons no change
    Tags: None
    • tocold4u2
      Badcaps Veteran
      • Dec 2012
      • 284
      • usa
      #2
      Re: lg 47lv4400UA lines on screen

      here is a pic of the display
      Attached Files

        Comment

        • tocold4u2
          Badcaps Veteran
          • Dec 2012
          • 284
          • usa
          #3
          Re: lg 47lv4400UA lines on screen

          if ya need better lighting for pic s let me know
          Attached Files

            Comment

            • Alastair E
              Chief Womble
              • Mar 2013
              • 1963
              • U.K.
              #4
              Re: lg 47lv4400UA lines on screen

              Chances are--panel's toast. There's a lot of this happening lately....
              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

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: lg 47lv4400UA lines on screen

                  Yes, I have to agree. I had a cracked screen 32" which had a very similar look, and one tab bond was getting very hot...
                  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

                    • tocold4u2
                      Badcaps Veteran
                      • Dec 2012
                      • 284
                      • usa
                      #6
                      Re: lg 47lv4400UA lines on screen

                      thanks 4 the help..i kinda figured that but wanted a second opinion

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK
                          #7
                          Re: lg 47lv4400UA lines on screen

                          Before you do dispose of it, you could try checking the t-con VGL and VGH voltages to see if they are OK -- small chance of bad t-con.
                          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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