Fa180pm111 / dw5g3 dell psu

[kmx200]

Hello to everybody

I have a broken FA180PM111 / DW5G3 DELL PSU which has no output.
While checking several components, I found out that Q6 has 2 shorted pins, so at least this component needs replacement.
The problem is that I can't find any schematic/service manual of the psu, neither of the component.
I can barely see (with a microscope) that the marking is something like SF546, but cannot find any smd relative to this.
I attach photos of the psu and the component as well, so any help would be greatly apreciated.

Thank you in advance!
Kind regards
Stavros

[questore]

Thanks for the pictures. I have a R93 resistor that is carbonized so your picture helped. Thank you!

[harp]

BSS169

But... have you check after desoldering... is short is gone?
I see some traces accross pins and 1R near by...