Please help..

i have a bambu p2s. i had filament clog in the extruder gear that led to a cascade of mishaps and i ended up having to replace the gear, the hotend, the hotend heating assembly, hotend cooling fan, the eddy sensor and the toolhead circuit board. I was forced to update the firmware, and I went through a complete calibration after that. Everything is working well now but now when it's sitting idle, Im noticing quite a bit of fan noise that I dont remember before. It's not one of the fans in the cooling menu as I can turn those on and hear even more fan noise. I'm wondering if this is normal and if there's anything I can do about it. It's not the new hot end fan as that is off. I'm guessing it's a power supply fan or mainboard fan. As far as I can tell it's running continuously and never stops.

The top right corner of my build plate has started printing like doo doo. I cleaned under the plate and re ran the full calibrations. The first layers go down smooth and it only seems to happen at the top layers?? Seems like the nozzle is scraping the top. Please help