Vizio E551VL Relay clicking on and off

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  • RRice25541
    Member
    • Nov 2015
    • 47
    • USA
    #1

    Vizio E551VL Relay clicking on and off

    I've pulled the PS from the set and checked all caps with my digital ESR low ohms meter(Dick Smith unit) all caps are good, tested all transistors and FET's again all good.
    If i jump the 5v pin to the PS_ON the 12v,24v and 18v power pins come up briefly and then rapidly drop down to 0v(like the PS was unplugged and the caps are draining off.
    I'm wondering if the SG6742MR chip is the bad part in this PS.
    anyone have any idea's on this a schematic would help greatly if anyone has it.
    the PS is DPS-321AP
    Last edited by RRice25541; 12-29-2016, 12:48 PM. Reason: left out the PS part No.
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