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Thread: Need ATX SMPS schematic use 311 for 5V STB

  1. #1

    Smile Need ATX SMPS schematic use 311 for 5V STB

    Hi ,All
    pls help about ATX SMPS ,no standby voltage, it's use 311 in that loop.

  2. #2
    .... Silvio's Avatar
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    Apr 2015
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    Try to change the control chip or mosfet/transistor controlling it. Check for broken winding in the transformer primary. Check also for faulty capacitors and high value startup resistor.

    Please note that there are hundreds of different schematics for ATX smps. At least give brand name and details if you want help.

    see if one of these match your smps.

    Last edited by Silvio; 02-17-2020 at 09:08 AM.

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