Samsung QE65Q800TAT

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  • amennone
    Senior Member
    • Feb 2015
    • 63
    • italy
    #1

    Samsung QE65Q800TAT

    Defect: Off, voltages on the power supply ok.
    When you press the power button, the TV makes a clicking sound (activates the relay),
    the Power LED continues to remain off.
    The 13 volt voltage on the power supply is ok.
    By disconnecting the cable from the main board to the power supply, the TV backlight turns on.
    I suspect the flaw is the main board, any suggestions are valuable.
    I couldn't find any wiring diagrams online.

    BN44-01068A LED DRIVER BOARD
    BN95-06565A T-CON
    BN41-02752A MAIN AV BOARD BN41-02752A (BN94-15931K) - SAMSUNG
    BN44-01073A Power board
    BN40-00338A BN94-15301NJ TUNER-DTV AIR CABLE
    CY-TT065JMLVCH
    BN95-07056A Samsung LCD/LED-panel
    Tags: None
    • Diah
      Badcaps Legend
      • Feb 2013
      • 6364
      • Germany
      #2
      Re: Samsung QE65Q800TAT

      8K SAMI... kinda of joke ... take out the black heat sink complete and post photos for yours boards up down side photo as well close to SPI and if you able to make dump of it.

        Comment

        • amennone
          Senior Member
          • Feb 2015
          • 63
          • italy
          #3
          Re: Samsung QE65Q800TAT

          Originally posted by amennone
          Defect: Off, voltages on the power supply ok.
          When you press the power button, the TV makes a clicking sound (activates the relay),
          the Power LED continues to remain off.
          The 13 volt voltage on the power supply is ok.
          By disconnecting the cable from the main board to the power supply, the TV backlight turns on.
          I suspect the flaw is the main board, any suggestions are valuable.
          I couldn't find any wiring diagrams online.

          BN44-01068A LED DRIVER BOARD
          BN95-06565A T-CON
          BN41-02752A MAIN AV BOARD BN41-02752A (BN94-15931K) - SAMSUNG
          BN44-01073A Power board
          BN40-00338A BN94-15301NJ TUNER-DTV AIR CABLE
          CY-TT065JMLVCH
          BN95-07056A Samsung LCD/LED-panel
          After more detailed checks, the power LED turns on, stays on for about 5 seconds, then turns off and on again. The relay turns on and off, like the power LED, in an infinite loop,
          in all this the backlight remains off.

            Comment

            • amennone
              Senior Member
              • Feb 2015
              • 63
              • italy
              #4
              Re: Samsung QE65Q800TAT

              Dump W25Q40CL
              Attached Files

                Comment

                • amennone
                  Senior Member
                  • Feb 2015
                  • 63
                  • italy
                  #5
                  Re: Samsung QE65Q800TAT

                  можно ли получить дамп spi w25q40, спасибо

                    Comment

                    • Diah
                      Badcaps Legend
                      • Feb 2013
                      • 6364
                      • Germany
                      #6
                      Re: Samsung QE65Q800TAT

                      disconnect the cable between power boards and the Main board.. then plug it in wall.... check if the back light will turn on

                      i see you did it before... then how about disconnect one if the LVDS and turn on.... BL come on ?
                      Last edited by Diah; 10-14-2023, 11:48 AM.

                        Comment

                        • amennone
                          Senior Member
                          • Feb 2015
                          • 63
                          • italy
                          #7
                          Re: Samsung QE65Q800TAT

                          Originally posted by Diah
                          disconnect the cable between power boards and the Main board.. then plug it in wall.... check if the back light will turn on

                          i see you did it before... then how about disconnect one if the LVDS and turn on.... BL come on ?
                          Disconnect the LVDS cable, the backlight is not present. 25Q40 is definitely corrupt.
                          I need the dump of 25Q40.
                          Thanks for your interest

                            Comment

                            • electro.hd
                              New Member
                              • Aug 2018
                              • 2
                              • maroc
                              #8
                              Thank you for your interest and cooperation in this topic

                                Comment

                                • electro.hd
                                  New Member
                                  • Aug 2018
                                  • 2
                                  • maroc
                                  #9
                                  If someone or a member of the forum needs to DMP emmc I read it from the motherboard. (I have it) Thanks everyone

                                    Comment

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