820-3437 PPBUS_G3H missing (ISL6259 getting hot)

[KappaDev]

I have a 820-3437 logic board taken from a 2012 A1466 Macbook Air.

No green or orange light on charger. No visible liquid damage. Had aftermarket charger which makes me suspect trashed ISL6259.

Rails:
PPBUS_G3H - no present 0V @ 350ohm to GND
PPDCIN_G3H - 15.14V
PP3V42_G3H - 3.434V
SMC_RESET_L - 3.402V
CHGR_DCIN - 11.85V
SMC_BC_ACOK - 0.042V
CHGR_ACIN - 3.963V

Area around ISL6259 gets warm, but I can't really tell if that is exactly the shorted component as I don't immediately measure any shorts around it. Just want to be sure before I go looking for a replacement.

Both boardview and schematics are attached.
Any suggestions would be appreciated. Thanks!

[piernov]

Re: 820-3437 PPBUS_G3H missing (ISL6259 getting hot)

Yes probably dead U7100. You can remove F7140 and check which side is the short on at least.
If you confirm it's on pin 1 you can remove U7100 and see if resistance goes up.