Panasonic PS-50PS14 Plasma 50"

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  • SgtRock
    Senior Member
    • Feb 2012
    • 175
    • USA
    #1

    Panasonic PS-50PS14 Plasma 50"

    Greetings BadCappers:

    --The visible part of the screen measures 24-1/4" tall. The bottom 9" blacks out intermittently (see attached picture). No blink codes and no other incorrect behavior. I have the back off and there are no bulged capacitors, or burns any where. Everything looks pristine. I do have the Service Manual which provides component values.

    --I would appreciate any advice on where to begin. I will be glad to provide pictures of any area of particular interest.

    Best Regards
    Clear Ether
    Attached Files
    Tags: None
    • drpj23
      Badcaps Veteran
      • May 2012
      • 528
      • USA
      #2
      Re: Panasonic PS-50PS14 Plasma 50"

      Try reseating the bottom buffer board. Does this happen with all inputs and osd?

        Comment

        • retiredcaps
          Badcaps Legend
          • Apr 2010
          • 9271
          #3
          Re: Panasonic PS-50PS14 Plasma 50"

          Originally posted by SgtRock
          --I would appreciate any advice on where to begin. I will be glad to provide pictures of any area of particular interest.
          Tom66, also a member at eevblog, wrote this that might help you understand the failure.

          https://www.badcaps.net/forum/showthread.php?t=18542

          I, myself, have no knowledge in plasmas other than I can watch one.
          Last edited by retiredcaps; 12-10-2012, 01:27 AM.
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            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Panasonic PS-50PS14 Plasma 50"

              This is most likely a (lower) buffer failure, though I have never seen this occur before... suppose there's a first for everything.

              I got to watch the 50" NEC plasma I fixed for my dad, now I'm back from uni over the holidays. About 6 years old, picture looks better than my brother's new Samsung 46" LED, and our Samsung 40" LCD (also repaired.) Next time I see a good plasma, I think I will keep it for our student house...
              Last edited by tom66; 12-10-2012, 06:21 AM.
              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

                • SgtRock
                  Senior Member
                  • Feb 2012
                  • 175
                  • USA
                  #5
                  Re: Panasonic PS-50PS14 Plasma 50"

                  Greetings BadCappers:

                  --The problem occurs on TV or computer input and with or without menu. See the picture below for board placement. Now, on eBay they are selling C1, C2, and C3 as buffer boards, is that correct. And if C1, C2 and C3 are buffer boards, then, which one is the lower buffer board, if anyone happens to know? Also see below, pictures of what I can see of the three boards. Thanks for the help.

                  Best Regards
                  Clear Ether
                  Attached Files

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Panasonic PS-50PS14 Plasma 50"

                      Those are the address boards; the buffer boards are on the left of the panel, looking from the rear. The address boards -nearly never- go wrong.
                      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

                        • SgtRock
                          Senior Member
                          • Feb 2012
                          • 175
                          • USA
                          #7
                          Re: Panasonic PS-50PS14 Plasma 50"

                          Dear Tom:

                          --By lower buffer board, I would assume you mean the board labeled SD in the Board Placement Diagram, is that correct?

                          Best Regards
                          Clear Ether

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Panasonic PS-50PS14 Plasma 50"

                              Yes, that is correct. First, try reseating the cables/connectors around it. If that fails, replace 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

                                • SgtRock
                                  Senior Member
                                  • Feb 2012
                                  • 175
                                  • USA
                                  #9
                                  Re: Panasonic PS-50PS14 Plasma 50"

                                  Dear Tom:

                                  Rodger that. I will report back.

                                  Best Regards
                                  Clear Ether

                                    Comment

                                    • SgtRock
                                      Senior Member
                                      • Feb 2012
                                      • 175
                                      • USA
                                      #10
                                      Re: Panasonic PS-50PS14 Plasma 50"

                                      Dear Djrp23 & Tom66:

                                      --Unfortunately reseating those damn flimsy cables did not work. But replacing the board in question for $40 did the trick. So my Brother (who watches TV) has a nice Christmas present. Thanks for the help.

                                      "Horse sense is the thing a horse has which keeps it from betting on people."
                                      William Claude Dukenfield, W. C. Fields 1880 - 1946

                                      Best Regards
                                      Clear Ether
                                      Attached Files

                                        Comment

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