Hi everyone, 
I've been using the EVGA Precision X1 with my 3080 FTW3 Ultra for a while with no problems so far until yesterday. I replaced my PSU, cleaned everything, plugged all the cables and powered the system back on. Everything is working just fine but the fans plugged into the card's aux fan header, are not spinning anymore, so I opened the Precision software and the 4th is not showing at all. 
I tried reinstalling everything, double checked all the connections and even plugged another fan to the aux header with no luck. 
Any ideas on what can be causing the issue? Thanks!