one of my S3 fans totally died. 0 RPM. on the fan it says model number JDH1238B I had a 3 pin 2000 RPM fan but won't fit because pins are larger and 4 pin. Any advise for me to fix or buy? Send it back to China or cut the connector?
You need a 120mm PWM fan, which has a 4 pin connector. While waiting for your RMA, you could fit a Corsair SP120 high performance fan. If you do, I would put the Corsair on the inlet and your good Bitmain fan on the outlet. I've been running my S3s with these fans on the inlets from the outset. Got them from Amazon.