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Panasonic G20 Failure :/

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    #41
    Re: Panasonic G20 Failure :/

    Yeah you're right! I see it now.

    It doesn't glow on the SC and the SS when the SC power is plugged in.

    Thank you!
    Last edited by JosQuelqu1; 12-01-2012, 10:03 PM.

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      #42
      Re: Panasonic G20 Failure :/

      Originally posted by JosQuelqu1 View Post
      Yeah you're right! I see it now.

      It doesn't glow on the SC and the SS when the SC power is plugged in.

      Thank you!
      No, that's because it sounds you've suffered a shorted SC board like quit a few of us now so there's no VS voltage being generated by the PSU.

      If you disconnected the power from the SC board, you'll probably find 7 blinks and the LED on the SS board will illuminate for a few seconds then gradually dim once the 7 blinks and shutdown occurs.

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        #43
        Re: Panasonic G20 Failure :/

        Exactly.

        Where can I order the SC board??
        Last edited by JosQuelqu1; 12-01-2012, 10:56 PM.

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          #44
          Re: Panasonic G20 Failure :/

          Originally posted by JosQuelqu1 View Post
          Exactly. So wich board is defect?
          Oh, I thought Tom had pointed that out. If you've disconnected the SC and now get 7 blink then it's the SC board. I think you said 10 and 4 blinks. I had a straight out 4 blink which is a PSU code but the SC completely shorted the VSus voltage(190-200V) on the PSU so that is why the PSU code but the PSU is not the problem.

          I'd expect if you disconnected the power from SS and had the SC connected you'll still have whatever code you had originally 10 or 4 blink.

          Someone else here recently had 10 blink and was SC board.

          From the manual, 1 of the conditions for 10 blink
          Shorted Vsus (By the SS board or SC board).

          The hard part will be finding a replacement at a good price. Those revisions all worked in my TV. AF was the original board.

          I've purchased 2 extras as spares but it looks like I'm about to lose one to a relative with the same TV

          Comment

            #45
            Re: Panasonic G20 Failure :/

            Google. ebay, ebay UK, shopjimmy( nearly out of all versions!) and probably a bunch of others you'll find with google. maybe search for broken TVs (screen damage)for sale although this board is suffering a high failure rate I feel so you can't exactly test a broken TV before purchase.

            There are different TNPA5081 for the 42,46,50 & 54" models so you'll have to watch out for that. Not everyone knows what they're selling.

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              #46
              Re: Panasonic G20 Failure :/

              I just wanted to make sure it was the SC.

              Thank you very much both of you. Now I'll try to find the part.

              Comment

                #47
                Re: Panasonic G20 Failure :/

                Found i!

                www hdtvpartstore com

                also on (but out of stock):

                www tristatemodule com
                www retechtv com
                Last edited by JosQuelqu1; 12-02-2012, 03:11 PM.

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                  #48
                  Re: Panasonic G20 Failure :/

                  No chance for me.

                  I ordered the last the had in stock and it was damaged....

                  Comment

                    #49
                    Re: Panasonic G20 Failure :/

                    Originally posted by JosQuelqu1 View Post
                    No chance for me.

                    I ordered the last the had in stock and it was damaged....
                    You received it and it was damaged or did they not ship it because it was no good.

                    What was broken?

                    I had a quick chat with an Ebay seller GTVWATFORD in the UK who's starting to do up SC board repair kits, Asked him if he had plans for the TNPA5081 and he came back and set yes but still early days as he's testing them and there's one more component he's waiting for.

                    Reckons he'd got 10 boards to build. At least someone out there is having a good go at saving these boards.
                    Last edited by tw2005; 12-03-2012, 01:10 PM.

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                      #50
                      Re: Panasonic G20 Failure :/

                      They did not ship it because it was damaged. I don't know what is broken.

                      Comment

                        #51
                        Re: Panasonic G20 Failure :/

                        I asked for it but the sales person doesn't know. The warehouse refused to ship it.

                        Comment

                          #52
                          Re: Panasonic G20 Failure :/

                          They did the right thing. Probably an untested board or they have a policy of checking prior to shipment.

                          They're out there but not too cheap.

                          Comment

                            #53
                            Re: Panasonic G20 Failure :/

                            YES!

                            After a couple of emails Panasonic finaly agreed to repair the TV free of charge. I have to bring the TV to the service center this saturday.

                            Comment

                              #54
                              Re: Panasonic G20 Failure :/

                              Originally posted by aecky01 View Post
                              Quick question, I'm experiencing the same problems as the OP (2 year old 50G20). What board part number are you guys purchasing? The service manual shows TNPA5081, and the sticker on my SC board shows TNPA5081AF. I cannot find a board with the last two characters AF anywhere on the web. Would a TNPA5081AW board be similar enough?

                              Sorry for the confusion, first time trying to fix my TV.
                              FYI, I ordered a new SC board from shopjimmy http://www.shopjimmy.com/panasonic-t...u-sc-board.htm, replaced the board and everything is working perfectly. The board is version AP, so I can confirm these are compatible with the 50G20.

                              Thanks for the help guys! So happy not to have to buy a new tv.

                              Comment

                                #55
                                Re: Panasonic G20 Failure :/

                                Originally posted by JosQuelqu1 View Post
                                YES!

                                After a couple of emails Panasonic finaly agreed to repair the TV free of charge. I have to bring the TV to the service center this saturday.
                                Well done. I sent an email myself letting them know how problems people are having.

                                I suspect by the response they can't admit liability but I got the idea that they would have assessed and repaired it out of warranty too.

                                Problem is i buy these to fix so i can't really claim to be the original owner with no receipt and that's who they want to look after.

                                I've had one item with Panasonic done out of warranty like that in 21 years.probably why I stick with the brand.

                                Maybe put a separate post up explaining what happened as it may help others get the same deal.

                                Comment

                                  #56
                                  Re: Panasonic G20 Failure :/

                                  Originally posted by aecky01 View Post
                                  FYI, I ordered a new SC board from shopjimmy http://www.shopjimmy.com/panasonic-t...u-sc-board.htm, replaced the board and everything is working perfectly. The board is version AP, so I can confirm these are compatible with the 50G20.

                                  Thanks for the help guys! So happy not to have to buy a new tv.
                                  It certainly does, another happy repair. good job.

                                  Comment

                                    #57
                                    Re: Panasonic G20 Failure :/

                                    Originally posted by tw2005 View Post
                                    Maybe put a separate post up explaining what happened as it may help others get the same deal.
                                    I've only been insistant. But yes I can explain what happen. I'll see this saturday if all goes well with television.

                                    Comment

                                      #58
                                      Re: Panasonic G20 Failure :/

                                      Apologies error
                                      Last edited by Stanislav; 12-10-2012, 11:46 AM.

                                      Comment

                                        #59
                                        Re: Panasonic G20 Failure :/

                                        Originally posted by JosQuelqu1 View Post
                                        I've only been insistant. But yes I can explain what happen. I'll see this saturday if all goes well with television.
                                        My TV is back to life! I can't enjoy it again. I hope this will last for a loooonng time.

                                        Comment

                                          #60
                                          Re: Panasonic G20 Failure :/

                                          Hi! i am try to repair my father panasonic P46g20 plasma.
                                          Probably it is a P-Board, because LED blink 4times. But is imposible buy new P-Board here in Czech Republic, so may i just change some caps on P-Board? Do you knou which of them?

                                          Thanks and sorry form my bad english.

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