Phillips 42pfl3603d/f7 No Picture

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  • landyboy
    Badcaps Veteran
    • Apr 2013
    • 443
    • USA

    #1

    Phillips 42pfl3603d/f7 No Picture

    Just picked up a Phillips 42pfl3603d/f7. Backlights come on but no picture, 12v to TCon both sides of fuse. Any thoughts main board?
  • landyboy
    Badcaps Veteran
    • Apr 2013
    • 443
    • USA

    #2
    Re: Phillips 42pfl3603d/f7 No Picture

    Here are some pictures of the boards.
    Attached Files

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: Phillips 42pfl3603d/f7 No Picture

      I would check the VCC and VCC1.8 test points on the t-con. VCC is likely 3.3V.
      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

      • landyboy
        Badcaps Veteran
        • Apr 2013
        • 443
        • USA

        #4
        Re: Phillips 42pfl3603d/f7 No Picture

        VCC is .890VDC and VCC1.8 is 0

        Comment

        • landyboy
          Badcaps Veteran
          • Apr 2013
          • 443
          • USA

          #5
          Re: Phillips 42pfl3603d/f7 No Picture

          Correction VCC1.8 is .543VDC

          Comment

          • landyboy
            Badcaps Veteran
            • Apr 2013
            • 443
            • USA

            #6
            Re: Phillips 42pfl3603d/f7 No Picture

            Both of these are low. Are these voltages supplied by the regulator on the TCON itself?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: Phillips 42pfl3603d/f7 No Picture

              They are supplied by that small square chip to the right of the larger LG Philips chip.
              Next, check AVDD; this is across the two small capacitors marked C111, C112 near the bottom middle right of the board.
              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

              • landyboy
                Badcaps Veteran
                • Apr 2013
                • 443
                • USA

                #8
                Re: Phillips 42pfl3603d/f7 No Picture

                11.68vdc

                Comment

                • landyboy
                  Badcaps Veteran
                  • Apr 2013
                  • 443
                  • USA

                  #9
                  Re: Phillips 42pfl3603d/f7 No Picture

                  Suspect Bad Tcon?

                  Comment

                  • landyboy
                    Badcaps Veteran
                    • Apr 2013
                    • 443
                    • USA

                    #10
                    Re: Phillips 42pfl3603d/f7 No Picture

                    Ok I replaced the TCON with a "good" one off of ebay. I now have a picture but it has horizontal flickers as seen in the picture. Most of the research I did still points to a TCON. Do you think this TCON is bad as well?
                    Attached Files

                    Comment

                    • newtothis
                      Badcaps Legend
                      • Mar 2013
                      • 1556
                      • england

                      #11
                      Re: Phillips 42pfl3603d/f7 No Picture

                      Possibly a bad board... That's problem with eBay

                      Comment

                      • landyboy
                        Badcaps Veteran
                        • Apr 2013
                        • 443
                        • USA

                        #12
                        Re: Phillips 42pfl3603d/f7 No Picture

                        Ordered a different TCON same problem. Could a bad main board cause this?

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #13
                          Re: Phillips 42pfl3603d/f7 No Picture

                          Possibly. A panel problem could also do so.
                          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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