Identifying dead mosfet/mosfet controller IC

Hi Fellow tronix fixers,

Ive got a Beep only Series S with a clearly dead Mosfet/Mosfet Controller IC its burnt out to the point i cant get a Serial number off it could someone identify it for me so i can look into replacing it obvs it might be a mess under there but its the ic nearest the front of the motherboard near the Fan connector next to R332.

Thanks in advance

Olly


If you are talking about that black mosfet Q4, AON7403L

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ALTERNATIVE opt: AONR21321

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Sorry for the slow reply, thank you so much for the info replaced the mosfet and its all good. Thanks again