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    #1

    Samsung ln40d630m3f

    This samsung unit will flash on then the screen blacks out. No sound or any other signs of life. Upon inspection of the p/s board an issue with a transformer was found. New board was purchased and installed. Issue persists.
    Any ideas would be great.
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    #2
    Re: Samsung ln40d630m3f

    Which transformer did you find an issue with and what kind of issue is it?
    What DCV do you have at the LED connector with ref to the chassis GND?
    What is the power supply/LED driver board P/N BN44-?????A/B/C/D.
    Last edited by budm; 08-17-2016, 12:27 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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      #3
      Re: Samsung ln40d630m3f

      L601 its the transformer that is right under j23 on the primary side. It was broken and the wires coming out of the coil were ripped out. Not finding a bn number anywhere. The pcb number is eax64905501....

      I just realized i had the wrong model of tv. I have 3 different ones in front of me. Im so sorry is there a way to change subject at this point. Correct model is LG 47LN400.

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        #4
        Re: Samsung ln40d630m3f

        If. There is a mod that can delete this thread i am going to start a new one with proper info

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