Panasonic TH50pz85U screen flicker after power supply repair

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  • Trueburton
    Member
    • Jun 2016
    • 49
    • USA
    #1

    Panasonic TH50pz85U screen flicker after power supply repair

    I just recently did the Norcal175 power supply repair on MC201 and MC301 boards. Once i fired the TV back on it turns on then every 3 seconds the screen goes black then come back on then goes black again. I turned the TV on and off a couple times and now the screen seems to be working fine. Any idea why this happened?
    Thanks
    Tags: None
    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia
      #2
      Re: Panasonic TH50pz85U screen flicker after power supply repair

      paying attention to the proximity of the P board(i.e. don't fry yourself) There's a red cluster of cabling that goes from the A - board to the D-board behind.

      LVDS cale.

      Give that a gentle wiggle and see if the problem replicates.

      That style of connector is notorious for being problematic. If it is try reseating a few time then I tape the connector in position at both ends so it does not move.

        Comment

        • Trueburton
          Member
          • Jun 2016
          • 49
          • USA
          #3
          Re: Panasonic TH50pz85U screen flicker after power supply repair

          So after leaving the TV on for a few minutes, less than 10min. It shut off and gave me 4 blinks. I unplugged the TV turned back on and I get the 10 blinks again! Please help.
          Thanks!

            Comment

            • Mrgooder
              New Member
              • Jun 2016
              • 1
              • Canada
              #4
              Re: Panasonic TH50pz85U screen flicker after power supply repair

              I'm curious because I may have the same problem with my Samsung PN42B430P2D. The TV turns on, but it flickers and there's this box of different coloured pixels that change colour. What's going on?

                Comment

                • Trueburton
                  Member
                  • Jun 2016
                  • 49
                  • USA
                  #5
                  Re: Panasonic TH50pz85U screen flicker after power supply repair

                  Today I found Fuse F301 blown. I am 99% sure this was not blown before reassembling the power supply board. I will replace it but what would have caused it to blow?

                    Comment

                    • Trueburton
                      Member
                      • Jun 2016
                      • 49
                      • USA
                      #6
                      Re: Panasonic TH50pz85U screen flicker after power supply repair

                      Could I have damaged the IC's I just replaced on the power supply?

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