Un50mu6070 Mainboard issue

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  • lotas
    Badcaps Legend
    • Jan 2016
    • 4451
    • Russia

    #81
    Re: Un50mu6070 Mainboard issue

    For this series, the header (the first bytes) in the Standby power firmware just flies off. And at the same time, even the indicator will not light, verified.

    Comment

    • lotas
      Badcaps Legend
      • Jan 2016
      • 4451
      • Russia

      #82
      Re: Un50mu6070 Mainboard issue

      Originally posted by crym1111
      again, no...
      Try putting SR first, and then write Dump.

      Comment

      • Diah
        Badcaps Legend
        • Feb 2013
        • 6336
        • Germany

        #83
        Re: Un50mu6070 Mainboard issue

        status reg make conflict always... using the CH341A programmer software V1.4 will be fine... the spi will not change first secor.
        Attached Files

        Comment

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

          #84
          Re: Un50mu6070 Mainboard issue

          Hijacking other one's thread does make time wasting from the involved users.. Open your thread please...

          Comment

          • crym1111
            Member
            • Feb 2022
            • 20
            • Romania

            #85
            Re: Un50mu6070 Mainboard issue

            Hi Lotas,
            For xxMU6xxx series you have to set on the programmer "STATUS REGISTERS"
            0x88, 0x42.
            For xxKU6xxx series is the same rule and the same set for SR (0x88 and 0x42)...?
            Kind regards

            Comment

            • lotas
              Badcaps Legend
              • Jan 2016
              • 4451
              • Russia

              #86
              Re: Un50mu6070 Mainboard issue

              Originally posted by crym1111
              Hi Lotas,
              For xxMU6xxx series you have to set on the programmer "STATUS REGISTERS"
              0x88, 0x42.
              For xxKU6xxx series is the same rule and the same set for SR (0x88 and 0x42)...?
              Kind regards
              Hello, in "MU" the cap in the 25Q40 firmware often flies and so that it does not fly off the first time it is turned on and these SRs (0x88 and 0x42) are put, I don't remember about "KU".

              Comment

              • crym1111
                Member
                • Feb 2022
                • 20
                • Romania

                #87
                Re: Un50mu6070 Mainboard issue

                Hi all,
                Because when i read 25Q40 from KU6xxx series found SR 1 set 0XAC and SR 2 set 0x2; in other case i found SR 1 set as 0x2C and SR 2 0x2.
                Could somebody to confirm how must be set SR for KU series...?
                Regards

                Comment

                • alltvrepairs
                  Badcaps Veteran
                  • Jan 2014
                  • 211
                  • Malta

                  #88
                  Re: Un50mu6070 Mainboard issue

                  Am following this thread as had issues on MU and KU series. I use the EZP2010 programmer and use new chips as far as possible. On a recent board the issue I managed to fix a no display problem replacing the upper IC 25Q80 (sorry I don't have the IC number here) by copying from a similar working board. I wasn't aware of any protection bits so maybe either I was lucky. After each read and copy I always verify the copy.

                  I have kept copies of both ICs as well if you need.

                  Comment

                  • Techplayer
                    New Member
                    • Apr 2022
                    • 7
                    • United States

                    #89
                    Re: Un50mu6070 Mainboard issue

                    I have a similar issue with a UN65MU650DFXZA. The tv presents the same symptoms as the original post by Storyteller12. Does anyone has a working bin file for this tv model? I am attaching the original bin file.
                    Attached Files

                    Comment

                    • lotas
                      Badcaps Legend
                      • Jan 2016
                      • 4451
                      • Russia

                      #90
                      Re: Un50mu6070 Mainboard issue

                      Someone else's, working firmware (Dump) will not help you, here's your restored one.
                      Attached Files

                      Comment

                      • Techplayer
                        New Member
                        • Apr 2022
                        • 7
                        • United States

                        #91
                        Re: Un50mu6070 Mainboard issue

                        Thank you. I will test it and let you know the result.

                        Comment

                        • Techplayer
                          New Member
                          • Apr 2022
                          • 7
                          • United States

                          #92
                          Re: Un50mu6070 Mainboard issue

                          TV turns on now, but it only shows a blue background and no image. It looks like I have another issue.

                          Comment

                          • lotas
                            Badcaps Legend
                            • Jan 2016
                            • 4451
                            • Russia

                            #93
                            Re: Un50mu6070 Mainboard issue

                            There was a problem in your firmware, I fixed it, is it your own motherboard or did you buy it from another TV?
                            Check all cables are correctly inserted, without distortions, do all this with the TV turned off.

                            Comment

                            • Techplayer
                              New Member
                              • Apr 2022
                              • 7
                              • United States

                              #94
                              Re: Un50mu6070 Mainboard issue

                              It's the original motherboard. I did check all the connections and everything is correctly inserted. Also I noticed when I disconnected the the cable from the power supply to the main board, it has the same behavior; backlight turns on but it's all blue. I will order a new set of backlights and I will post the result.

                              Comment

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

                                #95
                                Re: Un50mu6070 Mainboard issue

                                The screen is not blue, is dark grey or logically black...

                                Comment

                                • nomoresonys
                                  Badcaps Legend
                                  • Jan 2013
                                  • 12074
                                  • U.S.

                                  #96
                                  Re: Un50mu6070 Mainboard issue

                                  Originally posted by Techplayer
                                  It's the original motherboard. I did check all the connections and everything is correctly inserted. Also I noticed when I disconnected the the cable from the power supply to the main board, it has the same behavior; backlight turns on but it's all blue. I will order a new set of backlights and I will post the result.
                                  by this you mean when you look thru the little holes on the back of the tv the backlights are blue?

                                  Comment

                                  • Techplayer
                                    New Member
                                    • Apr 2022
                                    • 7
                                    • United States

                                    #97
                                    Re: Un50mu6070 Mainboard issue

                                    Originally posted by nomoresonys
                                    by this you mean when you look thru the little holes on the back of the tv the backlights are blue?
                                    No, the front display is all blue. I found some YouTube videos about that issue and they fixed it by changing the led's.

                                    Comment

                                    • Techplayer
                                      New Member
                                      • Apr 2022
                                      • 7
                                      • United States

                                      #98
                                      Re: Un50mu6070 Mainboard issue

                                      Originally posted by Davi.p
                                      The screen is not blue, is dark grey or logically black...
                                      Yes, you are right. But that is when the TV is off.

                                      Comment

                                      • mtorres927
                                        New Member
                                        • Feb 2023
                                        • 1
                                        • USA

                                        #99
                                        Re: Un50mu6070 Mainboard issue

                                        Can someone help with this eprom, My tv has no picture, model No UN50MU6070 ver DE09

                                        I have attached the eprom dump. I'll appreciate any help given
                                        Attached Files

                                        Comment

                                        • ducky29
                                          Badcaps Veteran
                                          • Dec 2015
                                          • 370
                                          • Europe

                                          #100
                                          Re: Un50mu6070 Mainboard issue

                                          @Iotas. Can you please check my dump? I think its ok but just want to make sure.

                                          Thanks in advance.
                                          Attached Files

                                          Comment

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