I ordered a replacement fan from a link a guy on here gave me. Fan 3 is at 4,680 fan 5 is at 6,805 the temps are staying at 80c and below been running for an hour. Which is the exhaust fan and which is the intake and does this seem legit and safe? Delta QFR1212GHE Fan 12 Volt 2.7 Amp 12038 120mm*120mm*38mm 4pin https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F162854214490
That is the fan he sent me to get
Why did you replace the fan? Fan failure due to age and/or dust could mean your heatsinks are clogged as well.
Edit: what's the ambient temperature? Your temps don't seem too bad compared to some of my miners but I have like 25C ambient so YMMV.