Panasonic TC-P50V10 - Partial screen/Partial Flickering

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  • drpj23
    Badcaps Veteran
    • May 2012
    • 528
    • USA
    #1

    Panasonic TC-P50V10 - Partial screen/Partial Flickering

    Well the top quarter of the screen works (as well as bottom) but past that it is cut off. (The whole screen is primed though)

    Normally I would think a buffer failure but when there is a bigger signal (lets say snow for cable) then the whole screen will show as well as the hidding menu.

    I can sometimes get the rest of the menu to show but it flickers (but only flickers under that quarter of the screen that is fine).

    So I have narrowed it down to a drive board failure. The power supply checks out. I do not know what the other check points on the SC board are so couldn't really verify but if you wanted to know I could get those for you.

    I want to cancel out the SS board since that top portion is fine and it's symptoms seem opposite of an X/Z failure on a plasma.

    This happens on all inputs so it seems D and A (integrated) would be ruled out and since it seems to processing correctly.

    I think it is in the buffers or SC board but not sure, never seen this.
    Last edited by drpj23; 01-22-2013, 05:28 PM.
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

      Can we see a picture of the problem?
      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

        • drpj23
          Badcaps Veteran
          • May 2012
          • 528
          • USA
          #3
          Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

          Yep. I will get a few up tomorrow.

            Comment

            • drpj23
              Badcaps Veteran
              • May 2012
              • 528
              • USA
              #4
              Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

              Here are some.
              I noticed on cable snow it would go full (no flicker) but I had a movie in with composite video and it struggled to show the lower 3/4 of the screen but HDMI had no trouble at all.
              There was no distortion in the picture other than the absence of it.
              Attached Files

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                  We have seen this before, it is a bad Y-Buffer.
                  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

                    • drpj23
                      Badcaps Veteran
                      • May 2012
                      • 528
                      • USA
                      #6
                      Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                      Good to know - thanks for the insight - I will let you know how it turns out.

                        Comment

                        • drpj23
                          Badcaps Veteran
                          • May 2012
                          • 528
                          • USA
                          #7
                          Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                          Everything is good and running.
                          Thanks again.

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                              Buffer replaced?
                              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

                                • drpj23
                                  Badcaps Veteran
                                  • May 2012
                                  • 528
                                  • USA
                                  #9
                                  Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                                  Yes, though I got both buffers as a package deal so thought it wasn't a bad idea to replace both.

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK
                                      #10
                                      Re: Panasonic TC-P50V10 - Partial screen/Partial Flickering

                                      It is not a bad idea at all. Usually you can identify the suspect buffer by where the picture stops working from.
                                      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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