nb8513_mb_v3 no power

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  • kalilinux25
    Badcaps Legend
    • Mar 2018
    • 2069
    • ZAMBOANGA SIBUGAY

    #1

    nb8513_mb_v3 no power

    Hi I have a board that no power passing to the Second mosfet.

    Ive check all the mosfet and coils no shorted areas.
    So I've decided to pump voltage to the second mosfet to the sensing resistor.
    No amps consuming.
    Shorting the power button.
    It will just take 40ma .
    And found out that the SY8286BRAC was getting hot. but not so hot because the board will just turn off after 5 sec. I was just using lighter fluid to confirm that it was getting short.

    I tried replacing it with a new ic but same problem
    I tried to remove the ic and check all pins for short but no short found
    I tried to clean the pads and reflow agian and check for short but nothing found.
    Attached Files

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