Another Samsung 245Bplus BN44-00195A problem

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  • POM_MJ
    Badcaps Veteran
    • Aug 2009
    • 228
    #1

    Another Samsung 245Bplus BN44-00195A problem

    Dear All,

    I've Samsung 245Bplus with Power Supply board BN44-00195A problem.

    Firstly, The standby power 5.2V is good, The main power 24V and 5.4V not turn ON.
    I've replaced RM801 0.22ohm (blown), QM801,QM802 FQPF9N50C (short),
    RM810 4.7ohm (blown), ICM801 MC33067 (fail), PC802S PC817 (fail).

    Now the main power 24V and 5.4V are turn ON when I connect a 1K resistor between PWR-ON-OFF with 5.2V standby.

    Problem is after turn ON 5-10 secords, the 24V output drop around 19-21V, 5.4V is good, 5.2V standby drop/swing around 2.5V-3.5V.
    I've measure IC_VCC (MC33067 pin 15) drop from 14.9V to around 6V-8V.

    please advise.
    Regards,
    POM_MJ








    The attached schematic is BN44-00191A, exactly with BN44-00195A PCB.
    Attached Files
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    • ferdaws
      New Member
      • Dec 2014
      • 1
      • sweden
      #2
      Re: Another Samsung 245Bplus BN44-00195A problem

      hey how did you get the diagram for bn44 00191A? i want 1 for bn44 00195a

        Comment

        • CapLeaker
          Leaking Member
          • Dec 2014
          • 8113
          • Canada
          #3
          Re: Another Samsung 245Bplus BN44-00195A problem

          What does on MC33067 pin 10 (fault input) do?

            Comment

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