Question GTX970 Fan issues help

[jaz2018]

I have an Nvidia GTX970 Zotac with fans that just let the card overheat.
I've tried the latest drivers and older drivers with no luck.

They began buzzing loudly a couple of weeks ago then settled down just a bit.
Now they just let the card overheat and shut off when a game (say farcry2) gets a bit hectic.

The system is a tower with plenty of cooling - (AsusTek Prime Z370-A)
Running Win7-64 on an I7-8700 processor.

They never spin faster than 600RPM
I'm not in the US so cant get warranty repairs -
Looking at the fans they seem easy enough to change - are replacements available in the UK?

Also are they controlled by the BIOS settings? I cant find any other nvidia fan controls?

Any help is very welcome.
Thanks
jaz

 

[jaz2018]

EDIT:

STUPID ME - sorry to all - I didn't read the forum before posting
(being frustrated with the card is my excuse...)

I see the 75mm fans are available which I think is the correct size
(but not sure - comments?)

Being a lifelong nvidia fan (pun not intended) I'm very dissapointed
at what I'm reading about these things.

Just the same if anyone has anything to add please go ahead.

thanks
jaz

 

[jaz2018]

Just an update:

I changed the fans (easy to do - just 3 screws each) and now running quiet
and fairly cool again.

I see lots of GTX crashes reported here - perhaps more fans are starting
to fail than is apparent.

anyway - that fixed my issues.

best
jaz