Samsung UN55MU7000F No Power No Standby LED

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  • ojoil
    New Member
    • Apr 2024
    • 5
    • Canada

    #1

    Samsung UN55MU7000F No Power No Standby LED

    Hello,
    I read through this post:
    https://www.badcaps.net/forum/troubl...no-power/page2

    It seems like my tv is exhibiting similar symptoms. I have backlight when only the power supply is connected, but I didn't test much further.
    The main board is slightly different (BN94-12402R) although it is stamped the exact same...
    Board is stamped:
    MODEL: KANT_M_BUILT_IN
    CODE: BN41-02568B
    MODEL: BN41-02568

    I wonder if flashing the EEPROM will work on my board as well? If so, is someone able to provide the flash file for for me?

    Thanks!!
  • lotas
    Badcaps Legend
    • Jan 2016
    • 4577
    • Russia

    #2
    Post your original dump from 25Q40 here, I’ll fix it.

    Comment

    • ojoil
      New Member
      • Apr 2024
      • 5
      • Canada

      #3
      Hi lotas here's the dump! Thanks
      Attached Files

      Comment

      • lotas
        Badcaps Legend
        • Jan 2016
        • 4577
        • Russia

        #4
        Originally posted by ojoil
        Hi lotas here's the dump! Thanks
        Try.
        Attached Files

        Comment

        • ojoil
          New Member
          • Apr 2024
          • 5
          • Canada

          #5
          when trying to write the status registers S9/QE is greyed out in Asprogrammer so register 2 is set to 40 instead of 42. Will that be an issue?

          Comment

          • lotas
            Badcaps Legend
            • Jan 2016
            • 4577
            • Russia

            #6
            Originally posted by ojoil
            when trying to write the status registers S9/QE is greyed out in Asprogrammer so register 2 is set to 40 instead of 42. Will that be an issue?
            If there is a problem, change the program to NeoProgrammer V2.2.0.10
            In Asprogrammer the problem is in these status reg.
            Last edited by lotas; 05-02-2024, 03:54 PM.

            Comment

            • ojoil
              New Member
              • Apr 2024
              • 5
              • Canada

              #7
              Ok neoprogrammer worked, but same symptoms.

              I will remove the IC and attempt again:
              Is this the correct sequence?
              -Clear flash
              -write 0 to status registers
              -write fixed flash
              -write 0x88 and 0x42 to status

              ​​​​​​
              Thanks for your help!

              Comment

              • lotas
                Badcaps Legend
                • Jan 2016
                • 4577
                • Russia

                #8
                1. First you need to delete all status registers (uncheck all the boxes and click "Write")
                2. Erase the chip.
                3. Write down the corrected dump and check what was written down.
                4. Set the status register (0x88, 0x42), check the boxes and click "Write"
                5. Everything is ready, solder the chip in place....​

                Comment

                • ojoil
                  New Member
                  • Apr 2024
                  • 5
                  • Canada

                  #9
                  That worked! Thanks again for your help

                  Comment

                  • lotas
                    Badcaps Legend
                    • Jan 2016
                    • 4577
                    • Russia

                    #10
                    Ok!

                    Comment

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