Digitrex CTF4071A

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  • snipersquad100
    Badcaps Veteran
    • Nov 2013
    • 297
    • uk
    #1

    Digitrex CTF4071A

    Just bought this Digitrex CTF4071A for a tenner.
    There is no picture on it, all voltages are ok.
    Could it be the buffer board on the left???
    Attached Files
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Digitrex CTF4071A

      That's the inverter. LCDs don't use buffer boards.
      Did you check for 24V and BLON signal at it?
      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

        • snipersquad100
          Badcaps Veteran
          • Nov 2013
          • 297
          • uk
          #3
          Re: Digitrex CTF4071A

          24 is there, whats the BLON signal.
          some one has already posted about this set im thinking it might be a common problem.
          Anyway I think iv done a boo boo, I puled out the inverter board and instead of sliding it to the right to disconnect it from the brown plastic strip I disconnected the brown plastic strip from the bulbs. now I cant get the bulbs to slot back into the sockets.

            Comment

            • snipersquad100
              Badcaps Veteran
              • Nov 2013
              • 297
              • uk
              #4
              Re: Digitrex CTF4071A

              F102 on the inverter has blown.

                Comment

                • snipersquad100
                  Badcaps Veteran
                  • Nov 2013
                  • 297
                  • uk
                  #5
                  Re: Digitrex CTF4071A

                  and theres a burn mark on the underside of the inverter board that's also the side f102 powers.
                  Attached Files

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Digitrex CTF4071A

                      Looks like it's got hot, but that doesn't mean that's bad.
                      Any shorts either end of F102 to ground?
                      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

                        • snipersquad100
                          Badcaps Veteran
                          • Nov 2013
                          • 297
                          • uk
                          #7
                          Re: Digitrex CTF4071A

                          Yes, I got a 1.5 ohm reading at the side of the fuse that runs towards the hot spot.

                            Comment

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