un58tu7000 reboot loop

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  • tmlfan
    Senior Member
    • Jun 2011
    • 109

    #1

    un58tu7000 reboot loop

    I was recently given a Samsung un58tu7000 tv that was broken, upon plugging it in the tv constantly reboots after every 10 seconds or so

    found youtube video of a same series tv that had same issue and they removed a "led dimmer" wire from the power cable feeding main board and it fixed there issue but it didn't fix mine, also if i completely unplug that wire and start tv the screen stays on

    another video i found suggested pulling off one of the surface mounted chips and reprogramming it then resoldering it back on the board

    any suggestions ?
    Attached Files
  • alfatv
    Badcaps Veteran
    • Sep 2020
    • 353
    • Canada

    #2
    Re: un58tu7000 reboot loop

    Typical panel problem with these particular series.
    Unplug the cable from main to panel and see if it's still rebooting.

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12073
      • U.S.

      #3
      Re: un58tu7000 reboot loop

      that rebooting is probably a mainboard issue.

      Comment

      • tech9pc
        Member
        • Sep 2021
        • 47
        • Canada

        #4
        Re: un58tu7000 reboot loop

        I got lucky fixing one of these for a friend who was pissed at Samsung. A year old and started boot looping with blank screen. Samsung told them to F off. I left the tv unplugged for 24 hours. Held power button for 30 seconds to dump excess residual power. Also held power button on remote toward unplugged tv for 30 seconds. When plugged it back in it booted normally. I immediately updated it with newer software from USB stick. (maybe update prevents further glitches). Been working since. I told them to also be wary that this model has been know to ignite the diffuser panel and melt or cause fire according to many owners online.
        Last edited by tech9pc; 12-20-2022, 03:37 PM.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12073
          • U.S.

          #5
          Re: un58tu7000 reboot loop

          Originally posted by tech9pc
          I got lucky fixing one of these for a friend who was pissed at Samsung. A year old and started boot looping with blank screen. Samsung told them to F off. I left the tv unplugged for 24 hours. Held power button for 30 seconds to dump excess residual power. Also held power button on remote toward unplugged tv for 30 seconds. When plugged it back in it booted normally. I immediately updated it with newer software from USB stick. (maybe update prevents further glitches). Been working since. I told them to also be wary that this model has been know to ignite the diffuser panel and melt or cause fire according to many owners online.
          +100, has also worked for me on many occasions.

          Comment

          • Diah
            Badcaps Legend
            • Feb 2013
            • 6330
            • Germany

            #6
            Re: un58tu7000 reboot loop

            Originally posted by tech9pc
            Also held power button on remote toward unplugged tv for 30 seconds. When plugged it back in it booted normally.
            this is just fantasy repair....

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12073
              • U.S.

              #7
              Re: un58tu7000 reboot loop

              Ok, maybe I just dreamed it syke, it does work for me.

              Comment

              • tmlfan
                Senior Member
                • Jun 2011
                • 109

                #8
                Re: un58tu7000 reboot loop

                when i unplug the cable completely from the mainboard the screen stays on

                Comment

                • nomoresonys
                  Badcaps Legend
                  • Jan 2013
                  • 12073
                  • U.S.

                  #9
                  Re: un58tu7000 reboot loop

                  ok, so that usually means that your powerboard and backlights are alright.

                  Comment

                  • Storyteller12
                    Badcaps Veteran
                    • Jun 2020
                    • 624
                    • USA

                    #10
                    Re: un58tu7000 reboot loop

                    Originally posted by alfatv
                    Typical panel problem with these particular series.
                    Unplug the cable from main to panel and see if it's still rebooting.
                    +1 on the panel issue. Try โ€œtape methodโ€ and you should get a picture after some playing around. Unfortunately the picture is usually degraded in some way. Ie; loss of color/s and sometimes lines

                    Comment

                    • alfatv
                      Badcaps Veteran
                      • Sep 2020
                      • 353
                      • Canada

                      #11
                      Re: un58tu7000 reboot loop

                      Originally posted by diah
                      this is just fantasy repair....
                      +1

                      Comment

                      • alfatv
                        Badcaps Veteran
                        • Sep 2020
                        • 353
                        • Canada

                        #12
                        Re: un58tu7000 reboot loop

                        Follow the step in #2

                        Comment

                        • nomoresonys
                          Badcaps Legend
                          • Jan 2013
                          • 12073
                          • U.S.

                          #13
                          Re: un58tu7000 reboot loop

                          Diah was joking, for the 's who could not tell, he knows it works and has been documented for years.

                          Comment

                          • nomoresonys
                            Badcaps Legend
                            • Jan 2013
                            • 12073
                            • U.S.

                            #14
                            Re: un58tu7000 reboot loop

                            Originally posted by tmlfan
                            when i unplug the cable completely from the mainboard the screen stays on
                            to be clear, which cable, the one from powerboard to mainboard or flat cable from mainboard to panel?

                            Comment

                            • Davi.p
                              Hobbist
                              • Sep 2009
                              • 4258
                              • Italy - Milan

                              #15
                              Re: un58tu7000 reboot loop

                              once i have took out my magic stick and said the words : pampulu pimpulu parimpampu! and tv was working again, bigger size, better colours, and f.off Samsung bastards!

                              Comment

                              • tmlfan
                                Senior Member
                                • Jun 2011
                                • 109

                                #16
                                Re: un58tu7000 reboot loop

                                So I have a replacement main board coming for this tv today, is there anything special I have to do when I plug the board in and turn tv on, does it matter if I update it over internet or should I do usb instead, and if usb where can I download the updates for usb from ?

                                Comment

                                • nomoresonys
                                  Badcaps Legend
                                  • Jan 2013
                                  • 12073
                                  • U.S.

                                  #17
                                  Re: un58tu7000 reboot loop

                                  pop it in there and try it, might work without anything else needed.
                                  Last edited by nomoresonys; 12-28-2022, 08:11 AM.

                                  Comment

                                  • Storyteller12
                                    Badcaps Veteran
                                    • Jun 2020
                                    • 624
                                    • USA

                                    #18
                                    Re: un58tu7000 reboot loop

                                    You didnโ€™t follow anyones advice or directions. So why ask for help?
                                    Everyone here tried to help you but you donโ€™t listen or respond to request???

                                    Comment

                                    • nomoresonys
                                      Badcaps Legend
                                      • Jan 2013
                                      • 12073
                                      • U.S.

                                      #19
                                      Re: un58tu7000 reboot loop

                                      best thing you can do with any led tv, might exclude some of the newer tech, but especially these and similar series junk samsungs is turn the backlight down to as low as tolerable and keep it there for all modes, no watching on vivid mode or whatever theyre calling it these days.
                                      Last edited by nomoresonys; 12-28-2022, 08:27 AM.

                                      Comment

                                      • tmlfan
                                        Senior Member
                                        • Jun 2011
                                        • 109

                                        #20
                                        Re: un58tu7000 reboot loop

                                        I received the new main board today, swapped boards and it is still doing same thing, I figured out that also if you leave everything plugged in but remove this cable from the main to the panel also that the panel stays on
                                        Attached Files

                                        Comment

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