DELL XPS 9730 G3JX0$UA trying to identify chip that is getting hot.

[abajor]

Hi all, I've been trying to find some information about this 2024 DELL XPS 9730 Have found absolutely no board views or schematics anywhere.
The laptop suffered some minor water damage around a power mosfet which I cleaned up and replaced. From what I can tell that p channel power mosfet source receives a 12V rail when a power supply is connected but its not passing voltage through the drain.

When I plug in the USB C charger with battery removed I'm drawing .2A at 20V
With battery connected it stays at 5V

Under a thermal camera I can see that this component "PU4553" With the markings R9AFD or B9AFD is heating the board and fairly hot to the touch.

Hoping somebody has some idea what this part is, it looks a bit like a Silergy but there is one less identifier on the marking.

Attached are the images of the corroded P-Channel MOSFET area (which I've cleaned up) and the power regulation chip I can't identify.

[piernov]

https://www.badcaps.net/forum/troubl...ed-identify-ic

[mon2]

Be sure to clean up the swamp juice well with IPA on the mosfet. Suggest to also order spare mosfets of the same. This somewhat rare regulator is now available from assorted vendors on Aliexpress.

[abajor]

https://www.badcaps.net/forum/troubl...ed-identify-ic

Thanks!!!

[abajor]

Be sure to clean up the swamp juice well with IPA on the mosfet. Suggest to also order spare mosfets of the same. This somewhat rare regulator is now available from assorted vendors on Aliexpress.

Ohh yes fluxed and touched up. I even replaced the mosfet with an easier to get substitute.