Samsung QE49Q6FNAL short circuit

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  • kristofl
    New Member
    • Dec 2024
    • 1
    • Belgium
    #1

    Samsung QE49Q6FNAL short circuit

    Hi,
    I have a Samsung model QE49Q6FNAL, type number: QE49Q6FNA, which suddenly shut down while playing.
    Now I opened the TV and heard the power supply beeping at a high frequency. If I unplug all cables from the motherboard (BN41-02636), except the power supply to the motherboard (BN41-02636), the problem remains.
    Now it happens, when I pull the power supply from the motherboard, the backlight comes on. The squeaking noise from the power supply is also gone.
    So I suspect a short circuit on the motherboard? Because when I plug the power supply cable back into the motherboard, the backlight goes off again and the beeping starts.
    I can't immediately find anything that gets hot, except the CPU itself under the cooling block.
    Stb_voltage is stated on the power supply as 11.8V.
    When I measure this with the multimeter it is 12.8v.
    When I plug in the motherboard, the backlight turns off and the standby voltage remains 12.8v​
    Are there things I can still try myself?

    Thanks in advance for the help
    Tags: None
    • KYBOSH
      Badcaps Veteran
      • Oct 2011
      • 581
      • Unknown
      #2
      Post pics of the entirety of the back of the TV with the panel off so we can see what we are dealing with.
      Closeup/High quality pics of each of the major boards will also be helpful.
      Video of the TV acting offensively (with sound highlighting its origin) would be very helpful too.

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