Panasonic TH-50PX80U 8 Blink ?

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  • Treydogg77
    Treydogg77
    • Mar 2013
    • 99
    • US
    #1

    Panasonic TH-50PX80U 8 Blink ?

    I am troubleshooting a Panasonic TH-50PX80U with the 8 Blink error. I finally got the TV to turn on by unhooking the SS23 Cable. The TV comes on but has a very very dim vertical scrolling grain image. Do I need to replace the lower buffer boards to fix this problem? Review pictures below for the images I am getting.
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    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Panasonic TH-50PX80U 8 Blink ?

      8 blinks is SS board, usually. On the SS and SC boards there are small LEDs, do you see either glow when you turn the set on with all boards connected?
      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

        • Treydogg77
          Treydogg77
          • Mar 2013
          • 99
          • US
          #3
          Re: Panasonic TH-50PX80U 8 Blink ?

          Tom, I am pretty sure when everything is connected the SS & SC do not light up. But when I unhook the SS23 Cable, from the lower buffer board they do light up.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Panasonic TH-50PX80U 8 Blink ?

              Sounds like you may have a short on the lower X-address board.

              Full SM:


              Check pins 1,2,12 for shorts to ground, and DC voltage when connected (expect: 75V / 75V / 5V)
              Last edited by tom66; 11-08-2014, 03:59 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

                • Treydogg77
                  Treydogg77
                  • Mar 2013
                  • 99
                  • US
                  #5
                  Re: Panasonic TH-50PX80U 8 Blink ?

                  Tom,

                  I finally got back to this TV pins 1 & 2 have 75v, but pin 12 does no have 5v. So this means I need a SS Board correct?

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Panasonic TH-50PX80U 8 Blink ?

                      It can mean your C board or panel is failed - best to verify if the 5V is shorted. (5V short should cause 5 blink code though...)
                      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

                        • Treydogg77
                          Treydogg77
                          • Mar 2013
                          • 99
                          • US
                          #7
                          Re: Panasonic TH-50PX80U 8 Blink ?

                          Thank ya Tom!

                            Comment

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