LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

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  • kevinm34232
    Badcaps Legend
    • May 2012
    • 1884
    • USA
    #1

    LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

    I have this TV which didn't turn on. I diagnosed as having a bad main board. The original board in the TV is an LG 55.73G01.001. I couldn't find this board, but Shopjimmy has a substitute listed EBT61525903. I found that one and ordered it.

    The TV works now but has the inverted/negative picture like the AS15-19 problem. This T-Con does not have that chip though.

    I'm wondering if the main board is really not compatible even though the full service code matches. The board I ordered shows it's for a LG LC420WUE-SCA2 panel while my TV has a AUO T420HW09 V.0

    Is there a service menu on this TV?
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    • kevinm34232
      Badcaps Legend
      • May 2012
      • 1884
      • USA
      #2
      Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

      OK does anyone know if there is a service menu on these where you may be able to possibly change the panel type, and how to access it? Thank you.

        Comment

        • Alastair E
          Chief Womble
          • Mar 2013
          • 1963
          • U.K.
          #3
          Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

          You'll need to change the Panel Type in the boards service-settings--But whether the 'menu/menu' service page goes deep enough I dont know.

          --You may need the computer software and data-lead to do it--Both only LG service centre stuff....
          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

            • kevinm34232
              Badcaps Legend
              • May 2012
              • 1884
              • USA
              #4
              Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

              I was able to get into service menus
              http://openlgtv.org.ru/wiki/index.ph..._modes_/_menus

              using a universal remote
              http://openlgtv.org.ru/wiki/index.ph..._menus_/_modes

              But not way found to change the panel unfortunately.

                Comment

                • kevinm34232
                  Badcaps Legend
                  • May 2012
                  • 1884
                  • USA
                  #5
                  Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

                  Replaced main board with part # EBR73308816 and it works fine.

                    Comment

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