Samsung UE40F8000SZ, ignition problems

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

    Samsung UE40F8000SZ, ignition problems

    Power : L46U2P_DSM BN44-00635
    Chassis U90A
    Display CY-KF4000DSLV1H
    MAIN board
    MODEL : FOX_APMP_PRO
    CODE : BN41-01959C
    MODEL : BN41-01959
    SYMPTOM OF FAILURE:
    Continuous cycles of the relay. The logo on the screen appears and then returns to off, in a continuous loop.
    Sometimes it turns on smoothly.
    The mains are ok.
    I forced power on (3v3), the problem remains.
    I suspect a power supply problem.
    Thanks and good job .
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Samsung UE40F8000SZ, ignition problems

      Please use GO ADVANCED to attach the pictures of the whole backside of the TV showing all the boards.
      Last edited by budm; 10-09-2020, 05:27 PM.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

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