60PN5700 stopped working

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  • Gator_bud
    New Member
    • Nov 2016
    • 7
    • USA
    #1

    60PN5700 stopped working

    New poster.....hope you guys can help.

    After watching football all day, the screen went blank while watching a show. It then started turning off and on by itself, with no picture or sound (internal sound was turned off as I have a sound bar).

    Since then, I have tried to research the issue and came accross this fantastic site. Based on all things I have read, I have tried the following:

    - All boards connected - once turned on, snowy screen for 1 sec, turns off by itself, 2 sec later turns back on to "lighted" blank screen. No sound. Stays on until I turn it off.

    - Disconect Ysus from Zsus - same thing as above, but no snowy screen and blank screen is not "lighted". (my Ysus is connected to the Zsus, then Zsus to power supply)

    - Disconnect Z from power - same thing as Ysus disconnected.

    I then came accross this posting for the same TV, with same issues: https://www.badcaps.net/forum/showth...light=60pn5700

    So I tried the EXT AUTOGEN trick and a saw a clean/clear test pattern (Bright white screen, turned off/on, then cycled through all the colors and white/black going up/down/side to side......then repeated pattern.

    Does this mean that the Ysus and Zsus are fine? That the main board is the culprit? IF so, what is my next step? I can't find a replacement board anywhere. Is there a way to troubleshoot my board and fix it myself?

    Thanks,
    Dave
    Tags: None
    • aaronwt6
      Badcaps Veteran
      • Apr 2013
      • 855
      • US
      #2
      Re: 60PN5700 stopped working

      What you are describing is certainly a main board fault. Probably not much more you can do for troubleshooting on it yourself as you've already narrowed it down to that board. You can look for a replacement on eBay or I'd highly recommend contacting PTS electronics about repairing yours for you. I use them frequently when a board repair is over my head. They are quite speedy and reliable.

        Comment

        • Gator_bud
          New Member
          • Nov 2016
          • 7
          • USA
          #3
          Re: 60PN5700 stopped working

          Thanks Aaron......I reached out to them and am awaiting a response.

            Comment

            • Gator_bud
              New Member
              • Nov 2016
              • 7
              • USA
              #4
              Re: 60PN5700 stopped working

              Heard back from PTS Electronics and they agree that it is most likely the main board....however, they said they can't fix my board. Anyone have any other ideas? I don't want to buy another TV.

                Comment

                • Alastair E
                  Chief Womble
                  • Mar 2013
                  • 1963
                  • U.K.
                  #5
                  Re: 60PN5700 stopped working

                  If they cant fix it, then a replacement board is the only option. Fault-finding on an MB is a nightmare--Even for experienced engineer...
                  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

                    • Gator_bud
                      New Member
                      • Nov 2016
                      • 7
                      • USA
                      #6
                      Re: 60PN5700 stopped working

                      Thanks Alastair.....

                      After more research, it looks like LG has a substitute part # that can be ordered from them. I am going to try it out......will report back.

                      Dave

                        Comment

                        • Nick's Tvs
                          Badcaps Veteran
                          • Jan 2014
                          • 621
                          • USA
                          #7
                          Re: 60PN5700 stopped working

                          Gator bud,

                          If you are unable to find a good replacement main board, send me a message I can probably fix that board for you.

                            Comment

                            • Gator_bud
                              New Member
                              • Nov 2016
                              • 7
                              • USA
                              #8
                              Re: 60PN5700 stopped working

                              Thanks for all the help......I picked up the substitute replacement main board on Friday and it worked.

                              I appreciate all th feedback from all on this thread and the diagnostic advice on other threads within this forum......

                              Dave

                                Comment

                                • vinceroger69
                                  Badcaps Legend
                                  • Mar 2012
                                  • 6714
                                  • uk
                                  #9
                                  Re: 60PN5700 stopped working

                                  Thanks for the update have you got the number of the substitute board you found worked as it may help other members in the future with repairs.

                                    Comment

                                    • Gator_bud
                                      New Member
                                      • Nov 2016
                                      • 7
                                      • USA
                                      #10
                                      Re: 60PN5700 stopped working

                                      my old board was EBT62495013

                                      The new substitute board is EBT62495011

                                        Comment

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