Toshiba 40FT2U power board testing

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  • mmtech
    New Member
    • Mar 2011
    • 2

    #1

    Toshiba 40FT2U power board testing

    The TV would not turn on. pulled power board and checked the outputs. The 5v wake up is good and i assume I have to jump something to power up the others. The pins are marked as follows. 1-BLON 2-DIM 3-ACD 4PWON 5 and 6-5VCC 7-NC 8 and 9-12Vcc 10 11 and 12-GND 13 and 14-VA 15 and 16-GND. Any help would be much depreciated.
  • Andrew F. Ali
    Badcaps Legend
    • Jan 2014
    • 2450
    • Trinidad & Tobago

    #2
    Re: Toshiba 40FT2U power board testing

    Remove the jack from the Main Bd that comes from the Power Bd. Plug in the TV to 120Vac and see if the backlights come ON. Not sure if this Power Bd comes with pull-Up resistors.

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    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: Toshiba 40FT2U power board testing

      Originally posted by mmtech
      The TV would not turn on. pulled power board and checked the outputs. The 5v wake up is good and i assume I have to jump something to power up the others. The pins are marked as follows. 1-BLON 2-DIM 3-ACD 4PWON 5 and 6-5VCC 7-NC 8 and 9-12Vcc 10 11 and 12-GND 13 and 14-VA 15 and 16-GND. Any help would be much depreciated.
      Check the DCV of all those pins with all the boards connected and WITHOUT all the boards connected to the power supply board, then report the readings.
      We also need good clear pictures of the boards.
      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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