Panasonic TX-P42S30B - 6 blinks

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  • newtothis
    Badcaps Legend
    • Mar 2013
    • 1556
    • england

    #61
    Re: Panasonic TX-P42S30B - 6 blinks

    Wise choice to get the board rather than a new set. I have a S31 here and they are bloody good sets TBH

    Comment

    • MikeFloutier
      Member
      • May 2015
      • 42
      • UK

      #62
      Re: Panasonic TX-P42S30B - 6 blinks

      Ok I've now installed the new SN board.

      I've powered up and get 23 green blinks (with a slight pause on the 20th)

      The power does remain on however and the picture comes on which is great re the SN board.

      Two issues though:

      1. Getting some horizontal lines on the screen - presumably I just need to re-seat the appropriate SN RIBBON connector.

      2. I get a message saying that no signal is detected. I expected this at first but having plugged in my RF, HDMI & SCART I was surprised that it's still not detecting a signal.

      Any ideas?

      Comment

      • tw2005
        Badcaps Legend
        • Oct 2011
        • 6458
        • Australia

        #63
        Re: Panasonic TX-P42S30B - 6 blinks

        Originally posted by MikeFloutier
        Ok I've now installed the new SN board.

        I've powered up and get 23 green blinks (with a slight pause on the 20th)

        The power does remain on however and the picture comes on which is great re the SN board.

        Two issues though:

        1. Getting some horizontal lines on the screen - presumably I just need to re-seat the appropriate SN RIBBON connector.

        2. I get a message saying that no signal is detected. I expected this at first but having plugged in my RF, HDMI & SCART I was surprised that it's still not detecting a signal.

        Any ideas?
        turn off and reseat the connectors that line up with the lines.

        Any chance this has been reset back to factory default? either way try a re-tune but it has nothing to do with the SN board fault

        Comment

        • MikeFloutier
          Member
          • May 2015
          • 42
          • UK

          #64
          Re: Panasonic TX-P42S30B - 6 blinks

          Ok here's a pic when viewing the input from my DVD tuner.
          Attached Files

          Comment

          • newtothis
            Badcaps Legend
            • Mar 2013
            • 1556
            • england

            #65
            Re: Panasonic TX-P42S30B - 6 blinks

            That a bad connection onto the SN, Make sure they are seated correctly and no kinks are showing. They can be a pain to get in

            Comment

            • MikeFloutier
              Member
              • May 2015
              • 42
              • UK

              #66
              Re: Panasonic TX-P42S30B - 6 blinks

              Thanks TW, looks like all my channels were erased, I rescanned an now have tv pictures.

              When I re-seat each SN ribbon cable, do I need to allow time after switch off +/or disconnect power to SN board between tries?

              Comment

              • newtothis
                Badcaps Legend
                • Mar 2013
                • 1556
                • england

                #67
                Re: Panasonic TX-P42S30B - 6 blinks

                You need 10 minutes to disconnect SN from the rest of the set, I am not sure if it matters with the ribbons though but better safe than sorry?

                Comment

                • Alastair E
                  Chief Womble
                  • Mar 2013
                  • 1963
                  • U.K.

                  #68
                  Re: Panasonic TX-P42S30B - 6 blinks

                  Pan ribbons can be a fiddle--They tend to go in with a tiny little click--which allows the ribbon to fit just that little bit further into the socket....

                  Trouble is--In some cases, you need to use a fair amount of force to get 'em in--which is worrying, as they are so hard to 'grab old of'!
                  TELEFIX

                  How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                  http://www.irf.com/technical-info/appnotes/an-1088.pdf
                  PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                  Comment

                  • MikeFloutier
                    Member
                    • May 2015
                    • 42
                    • UK

                    #69
                    Re: Panasonic TX-P42S30B - 6 blinks

                    Thanks Newtothis, so I guess that means I need to:

                    1. Wait 10 mins, after switch off, then
                    2. Disconnect power & data inputs to SN,

                    Or do I disconnect as in 2. Then wait 10 mins? Sorry if this is pedantic but...

                    Then reseat the screen ribbons, reconnect and check picture.

                    Comment

                    • MikeFloutier
                      Member
                      • May 2015
                      • 42
                      • UK

                      #70
                      Re: Panasonic TX-P42S30B - 6 blinks

                      Thanks Alastair, will try to learn a firm but gentle technique, I guess this may take some perseverance

                      Comment

                      • newtothis
                        Badcaps Legend
                        • Mar 2013
                        • 1556
                        • england

                        #71
                        Re: Panasonic TX-P42S30B - 6 blinks

                        Originally posted by MikeFloutier
                        Thanks Newtothis, so I guess that means I need to:

                        1. Wait 10 mins, after switch off, then
                        2. Disconnect power & data inputs to SN,

                        Or do I disconnect as in 2. Then wait 10 mins? Sorry if this is pedantic but...

                        Then reseat the screen ribbons, reconnect and check picture.
                        You don't need to disconnect SN to put the ribbons in, Just if you WERE removing the main power connector from SN to wait 10 minutes to allow discharge.

                        Just not sure if it makes any difference when connecting the ribbons if you would need to wait. I don't and never caused any issues.

                        Comment

                        • flocko
                          Badcaps Legend
                          • Nov 2012
                          • 1121
                          • uk

                          #72
                          Re: Panasonic TX-P42S30B - 6 blinks

                          Hi Mike I see the board got to you safe and sound, take your time these can be a pig to get right. turn set off at mains and wait 5mins then reseat, when you can no longer see the gold on the ribbon outside the connector that when they are seated, any gold showing they are not in right, just a thought on the no signal you said you changed the main at first, have you put your old board back in Flocko

                          Comment

                          • MikeFloutier
                            Member
                            • May 2015
                            • 42
                            • UK

                            #73
                            Re: Panasonic TX-P42S30B - 6 blinks

                            Many thanks for the board Flocko and thanks for the fitting advice.

                            You are so right remembering about my old A (main) board. It is indeed sitting in a box in my study, not sure how I thought the tv would remember it's contents

                            Comment

                            • flocko
                              Badcaps Legend
                              • Nov 2012
                              • 1121
                              • uk

                              #74
                              Re: Panasonic TX-P42S30B - 6 blinks

                              No need to thank me. I am only to pleased to help it was the others that did all the fault finding and here is a big pat on the back from me to you all, well done chaps keep up the good work Flocko

                              Comment

                              • MikeFloutier
                                Member
                                • May 2015
                                • 42
                                • UK

                                #75
                                Re: Panasonic TX-P42S30B - 6 blinks

                                Thank you one and all, will let you know how it goes.

                                Comment

                                • MikeFloutier
                                  Member
                                  • May 2015
                                  • 42
                                  • UK

                                  #76
                                  Re: Panasonic TX-P42S30B - 6 blinks

                                  Ok, I'm about to reseat the SN ribbon cables to try to get rid of the various horizontal blanks in the display.

                                  However, looking at them, they all seem properly inserted; ie no gold bits showing, no kinks.

                                  Are there any other tips? Should I be cleaning the connector or cable contacts in some way?

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #77
                                    Re: Panasonic TX-P42S30B - 6 blinks

                                    They can look perfectly seated and still be off. I guarantee anyone who installs an SN board from a Panasonic set will see these lines. It is difficult to get them right, just remove them and reinsert until it looks good. (Turn power off while reseating. For the SN board outputs you should not need to wait for it to discharge.)
                                    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

                                    • MikeFloutier
                                      Member
                                      • May 2015
                                      • 42
                                      • UK

                                      #78
                                      Re: Panasonic TX-P42S30B - 6 blinks

                                      Many thanks Tom, that should save time not having to wait 5 mins between tries.

                                      I will perservere.

                                      Comment

                                      • MikeFloutier
                                        Member
                                        • May 2015
                                        • 42
                                        • UK

                                        #79
                                        Re: Panasonic TX-P42S30B - 6 blinks

                                        Ok, going fairly well.

                                        I've got rid of all three instances of entire missing horizontal blocks.

                                        What I'm having trouble with is collections of alternating missing lines, ie I get a single row of pixels followed by a single blank row. This continues, row on, row off, row on etc for most of a block or else just for 12 or so rows.

                                        Are the contacts staggered alternately? Maybe I'm just not reaching the deeper 50%?

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK

                                          #80
                                          Re: Panasonic TX-P42S30B - 6 blinks

                                          That's common. The connections are staggered somewhat.

                                          The trick is to remove the dodgy connection completely then line up the connector so both ends are in the same amount. Insert it in gently, until you get a click, then close the connector.
                                          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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