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LF: DELL 32" LCD Television schematic model W3201C

Discussion in 'Electronic Repair' started by mikercana1, Jan 11, 2007.

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  1. mikercana1

    mikercana1 Guest

    Does anyone have a schematic diagram for a 32" DELL LCD television
    model W3201C.
    Problem is with the power supply or else the mainboard not working
    properly.

    I found qty 2 transistors FET shorted, a screw caused a short and the
    fuse was blowing.
    I changed the transistors but the only that comes on on the main board
    is the SY5VDC LED the other 5 VDC and 12VDC LED do not come on.

    I suspect either the power supply to be still faulty or else the
    mainboard do not send the proper turn on voltage.

    When I plug it in, I hear the power supply oscillate, I see the SY5VDC
    LED lit on the mainboard , once I turn on the unit using the ON/OFF
    switch, I get that LED to come on but nothing else.


    If I had a diagram I could trace those voltages to the power and out of
    the power supply.


    Appreciate any help
     
  2. Franc Zabkar

    Franc Zabkar Guest

    In the absence of a diagram, I'd locate the PWM controller IC,
    assuming there is one, and download its datasheet. Then look for an
    on/off pin and work backwards from there.

    You could also try finding out who actually built the TV by searching
    the following database for the FCC ID:
    https://gullfoss2.fcc.gov/prod/oet/cf/eas/reports/GenericSearch.cfm

    - Franc Zabkar
     
  3. mikercana1

    mikercana1 Guest

    The ICs are all surface mount, tiny and can't tell the part number on
    them.

    Thanks anyway, maybe I can find another unit evantually to compare with

    Franc Zabkar a écrit :
     
  4. mikercana1

    mikercana1 Guest

    Where does DELL support get their diagrams for these units?
    mikercana1 a écrit :
     

  5. What makes you think that Dell repairs them?


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  6. James Sweet

    James Sweet Guest


    They don't, repair is done by board swapping until it works, defective
    boards are scrapped.
     
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