Samsung UE40C6600 problem with power supply

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  • Xristakis795
    Senior Member
    • Mar 2021
    • 162
    • Greece
    #1

    Samsung UE40C6600 problem with power supply

    Hi to all
    i have the above model of tv
    It has power supply bn44-00355a
    the problem is it burns the two mosfet TK8A50 page 5 of service manual
    I change the two mosfets after measurements I made without being able to find any other problem and again burns the new 2 mosfet
    can any of you help me figure out where these two components can burn?
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12085
      • U.S.
      #2
      Re: Samsung UE40C6600 problem with power supply

      Can you post the service manual so we can see what you are seeing?

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9528
          • Canada
          #3
          Re: Samsung UE40C6600 problem with power supply

          You likely have damaged gate drive components, check the DT1 to be sure the drive windings are not open, then check the resistors and diodes DM804 & DM805, you may need to lift one end to check them accurately
          You should also check the diodes on the TM801S secondary as one might have shorted.

            Comment

            • Xristakis795
              Senior Member
              • Mar 2021
              • 162
              • Greece
              #4
              Re: Samsung UE40C6600 problem with power supply

              thanks sir i will check it and i will tell you about
              as about as service manual downloaded free from electrotanya
              Last edited by Xristakis795; 01-26-2022, 02:18 PM.

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