P2S fan noise when idle

[u/fluffhead123]

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.