Panasonic THL42U20A Needs New Main Board!

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  • max1636
    Senior Member
    • Dec 2013
    • 80
    • Australia
    #1

    Panasonic THL42U20A Needs New Main Board!

    I've got a Panasonic THL42U20A with a faulty main board. Attempted to replace capacitors after some weird readings and broke a solider track in the process. Doh, I'll be more careful next time. I'm struggling to find a new board, the model for the board is TNP4G468.

    Anybody know where I can get one? Note it can't be the one with the Ribbon LVDS cable. There seem to be a few of those under the same model for some reason.
    Tags: None
    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia
      #2
      Re: Panasonic THL42U20A Needs New Main Board!

      just about near impossible I'd expect unless you get lucky on ebay. don't forget the revision when looking, 2 letters stamped on the board.

      I know for plasma, the A boards are similar to NZ market but our broadcast system is a different frequency step to theirs and everyone I else i suspect.

      so whilst it will look the same, you'll never tune a channel. I have experimented and converted a NZ to AUST swapping all the eeproms/flash chips across.

      Don't know how it goes with the LCDs.

      So would the caps have fixed it?

      What was the original fault? Is it not possible to jumper the broken track?

        Comment

        • max1636
          Senior Member
          • Dec 2013
          • 80
          • Australia
          #3
          Re: Panasonic THL42U20A Needs New Main Board!

          Originally posted by tw2005
          just about near impossible I'd expect unless you get lucky on ebay. don't forget the revision when looking, 2 letters stamped on the board.

          I know for plasma, the A boards are similar to NZ market but our broadcast system is a different frequency step to theirs and everyone I else i suspect.

          so whilst it will look the same, you'll never tune a channel. I have experimented and converted a NZ to AUST swapping all the eeproms/flash chips across.

          Don't know how it goes with the LCDs.

          So would the caps have fixed it?

          What was the original fault? Is it not possible to jumper the broken track?
          The backlight comes on but no image on screen, the board appears somewhat responsive as when I press the AV button I get a slight flicker but I can't get the set to make sound. I've already tried replacing the T-Con board.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Panasonic THL42U20A Needs New Main Board!

              Do you have a digital multimeter to make tests? Could be a repairable fault.
              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

                • max1636
                  Senior Member
                  • Dec 2013
                  • 80
                  • Australia
                  #5
                  Re: Panasonic THL42U20A Needs New Main Board!

                  Originally posted by tom66
                  Do you have a digital multimeter to make tests? Could be a repairable fault.
                  Yes I do and I found some weird readings on some capasitors but in the process of removing a surface mount cap I pulled off a track.

                    Comment

                    • Ltank
                      Badcaps Veteran
                      • Jun 2013
                      • 776
                      • USA
                      #6
                      Re: Panasonic THL42U20A Needs New Main Board!

                      Take a good pic showing the damage. Pace makes excellent videos available through U-Tube. If you got questions a lot of highly qualified techs can answer them

                        Comment

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