panasonic tx42-p42x20b

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  • adamp91gvm
    Badcaps Veteran
    • Jan 2014
    • 699
    • uk

    #1

    panasonic tx42-p42x20b

    hi i have the above model tv witch has the 10 blinks of death it clicks and then clicks about 3 seconds later i have had a look on this site a man had the same problem he ended up changing the a board . I can not find a a board for this model any where would any other a board work with this set thanks
  • vinceroger69
    Badcaps Legend
    • Mar 2012
    • 6714
    • uk

    #2
    Re: panasonic tx42-p42x20b

    wrong thread sorry
    Last edited by vinceroger69; 01-05-2014, 05:07 PM.

    Comment

    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6457
      • Australia

      #3
      Re: panasonic tx42-p42x20b

      Any pictures of it? is the A-board TNPH0829ME , TXN/A1LWUE?

      SOS 10 can be caused by other boards too. The SS board is a common failure on these, can you check SS11 for short cct with a meter?

      Comment

      • tw2005
        Badcaps Legend
        • Oct 2011
        • 6457
        • Australia

        #4
        Re: panasonic tx42-p42x20b

        Shopjimmy

        Ebay

        FlatTvparts _ for part number confirmation
        Attached Files

        Comment

        • adamp91gvm
          Badcaps Veteran
          • Jan 2014
          • 699
          • uk

          #5
          Re: panasonic tx42-p42x20b

          the board says tnph0829 on it not really clued up on how to test but really willing to learn

          Comment

          • adamp91gvm
            Badcaps Veteran
            • Jan 2014
            • 699
            • uk

            #6
            Re: panasonic tx42-p42x20b

            thats the board but im in the uk

            Comment

            • tw2005
              Badcaps Legend
              • Oct 2011
              • 6457
              • Australia

              #7
              Re: panasonic tx42-p42x20b

              Is there a white sticker with a barcode, ME TXN/A1LWUE?

              Comment

              • tw2005
                Badcaps Legend
                • Oct 2011
                • 6457
                • Australia

                #8
                Re: panasonic tx42-p42x20b

                Originally posted by adamp91gvm
                thats the board but im in the uk
                well I guess it depends on how bad you want an A-board. both will deliver, not cheap which is why I'd try and fault find it a bit.

                Do you have a mutlimeter?

                Comment

                • adamp91gvm
                  Badcaps Veteran
                  • Jan 2014
                  • 699
                  • uk

                  #9
                  Re: panasonic tx42-p42x20b

                  only white stickers say eng37f03kf and a smallone saying me-tp3

                  Comment

                  • adamp91gvm
                    Badcaps Veteran
                    • Jan 2014
                    • 699
                    • uk

                    #10
                    Re: panasonic tx42-p42x20b

                    i can get a multimeter tomorrow but dont know where to test it ? thanks for your help

                    Comment

                    • adamp91gvm
                      Badcaps Veteran
                      • Jan 2014
                      • 699
                      • uk

                      #11
                      Re: panasonic tx42-p42x20b

                      this is the page was reading on here
                      https://www.badcaps.net/forum/showthread.php?t=26584
                      Last edited by adamp91gvm; 01-05-2014, 05:53 PM.

                      Comment

                      • tw2005
                        Badcaps Legend
                        • Oct 2011
                        • 6457
                        • Australia

                        #12
                        Re: panasonic tx42-p42x20b

                        Originally posted by adamp91gvm
                        only white stickers say eng37f03kf and a smallone saying me-tp3
                        must be labelled different to the UK flat TV picture but the ME-TP3 could be the clue as the rev I was expecting was ME.

                        They can have white stickers with the number or a 2 letter suffix stamped on the PCB or a table printed into the board listing all the suffixes and some jumpers which indicate what suffix it is.

                        We have 3 sources listing an A for this model as the same including 1 UK source so it should be correct or upload some hi res shots of it top and bottom using advanced, manage attachments , max res is 2000 x 2000.

                        Anyway do yo have a meter to check anything?

                        i have the Aussie model TH-P42X20A, pretty much the same, the A board can cause SOS10, I caused mine to do it and it was the cabling was corroded and shorted out the A - SN board ribbom SN20. I fixed it by replacing the 2 buffer Ics on the A talk to the SN and the ribbon also sends 5v to the SN board, so P5v shorted tripped the SOS10 at the A.

                        I'd be tempted to check for shorted Vsus at either SN2 or SS11 first.
                        Last edited by tw2005; 01-05-2014, 06:32 PM.

                        Comment

                        • adamp91gvm
                          Badcaps Veteran
                          • Jan 2014
                          • 699
                          • uk

                          #13
                          Re: panasonic tx42-p42x20b

                          im going to get a multimeter from work tomorrow and give it a go but im not too sure on where im testing as im kind of new to this .i can re build engines no problem but electronics im just learning

                          Comment

                          • tw2005
                            Badcaps Legend
                            • Oct 2011
                            • 6457
                            • Australia

                            #14
                            Re: panasonic tx42-p42x20b

                            Originally posted by adamp91gvm
                            this is the page was reading on here
                            https://www.badcaps.net/forum/showthread.php?t=26584
                            Sure, i was going to suggest unplugging things, i like to back it up with measurements too.

                            So several things to try.

                            Disconnect 3 white ribbons at A, Disconnect SN2 (SN board LHS), SS11(SS rhs) and p35(PSU , feeds the C boards bottom of panel)

                            Power on.

                            Reconnect

                            disconnect SS11, see if SOS10 clears.

                            reconnect

                            disconnect SN2, SN3 and Sn20

                            Let me know the results

                            edit; don't reconnect straight away due to residual voltages on P2,P11 & P35, let it stand for 5 minutes, should really check with a meter. I've spiked those bottom buffers (c boards but a Samsung) and destroyed the Ics on them which means dead panel, no repair.
                            Last edited by tw2005; 01-05-2014, 06:10 PM.

                            Comment

                            • adamp91gvm
                              Badcaps Veteran
                              • Jan 2014
                              • 699
                              • uk

                              #15
                              Re: panasonic tx42-p42x20b

                              Ill try tomorrow after work and let u know thanks for your help u guys

                              Comment

                              • adamp91gvm
                                Badcaps Veteran
                                • Jan 2014
                                • 699
                                • uk

                                #16
                                Re: panasonic tx42-p42x20b

                                Has anyone ever had transistors go on these ? On the power board

                                Comment

                                • tw2005
                                  Badcaps Legend
                                  • Oct 2011
                                  • 6457
                                  • Australia

                                  #17
                                  Re: panasonic tx42-p42x20b

                                  Originally posted by adamp91gvm
                                  Has anyone ever had transistors go on these ? On the power board
                                  I reckon it would be rare, what's happening?

                                  Comment

                                  • adamp91gvm
                                    Badcaps Veteran
                                    • Jan 2014
                                    • 699
                                    • uk

                                    #18
                                    Re: panasonic tx42-p42x20b

                                    Just 10 flashing lights I have tried disconnecting different parts of the tv still it just stays at 10 flashes

                                    Comment

                                    • tw2005
                                      Badcaps Legend
                                      • Oct 2011
                                      • 6457
                                      • Australia

                                      #19
                                      Re: panasonic tx42-p42x20b

                                      So did you try disconnecting those ribbons at the A and isolate power from the SN,SS an C2 board(P35) and still SOS10?

                                      Comment

                                      • adamp91gvm
                                        Badcaps Veteran
                                        • Jan 2014
                                        • 699
                                        • uk

                                        #20
                                        Re: panasonic tx42-p42x20b

                                        Yer allways 10 flashes no matter what I take out

                                        Comment

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