Zotac 3070 ti amp holo high fan speeds but low temps

[bkbone]

Recently got a zotac 3070 ti amp holo which seems to perform fine besides the fan speeds. It doesnt seem to matter if the pc is at idle and temps are low the fan group 1 (left and middle fans) will always run at high speed. When underload the fans will either stay at the same speed or ramp up a little bit and the third fan (one on the right, group 2) will turn on as expected.
GPU temp is consistantly 25 degrees at idle but the fans are going crazy, they are so loud i have to use a headset to watch somthing.

Fan speeds reported as 0% for both group one and two, in both firestorm and afterburner. Manually setting the fan speed seems to do nothing and the same with setting a custom fan curve (in firestorm and afterburner).
I have updated to the latest driver and zotac doesn't seem to have any vbios avaliable to update that. Unfortuatly i bought the card 2nd hand so im unable to rma. Im wondering if maybe a dodgy fan connector on the board is to blame but im not too keen to pull it apart to check...

I uninstalled the driver using ddu, the only change is now just the middle fan is turning (still at full speed). HWinfo64 reports gpu fan 1 and 2 as being at 0 rpm and will go up when i set fans to 100% in afterburner. Adjusting the fan curve in after burner still seems to do nothing. I have also tried two different psu with the same results.

Not really sure what else i can do so any suggestions would be appreciated, thanks.

 

edit: reflashed vbios, didn't seem to make a difference

Specs:
AMD Ryzen 7 3800X
aio cooler
16gb 3200mhz t force ram
Gigabyte b450 aorus elite mobo
Various ssds (m.2 and 2.5" sata) and a hdd

[Dukesilver27-]

Seems like it's a hardware failure, maybe the fans sensor is broken or the fan controller is not connected/broken. Maybe take it to a service center have them take a look, or just RMA it.

[bkbone]

14 minutes ago, Dukesilver27- said:

Seems like it's a hardware failure, maybe the fans sensor is broken or the fan controller is not connected/broken. Maybe take it to a service center have them take a look, or just RMA it.

I suspect your right. Unfortualey it was bought 2nd hand so i cant rma, also my local service center have quoted $400 to repair it if it is a fan controller(not far off what i paid) so i was hoping there was some other troubleshooting i could try before i go down that road

[Dukesilver27-]

IDK if there's anything else to do, if even flashing the BIOS doesn't do anything, then the only issue left to be confirmed is the hardware itself. Best of luck.