Quote from: klingonjoe on August 02, 2017, 02:37:19 AM

Hi everyone,

I just received an S9 miner and operated it - no glitch - for about a week.

Now the S9 reports sporadically fan failures and then looses connections. The chip temperature stays close to 100F and the fans seem to still be running (the machine continues to be its usual noisy). I haven't seen any thing else out of the ordinary.

My questions:

Any suggestions to where to get one? or how to find a generic fan? (It seems bitmain S9 fans are sold out.)

The error reported in the log is: "Fatal error: fan lost!"

The fan reports 0 RPMs on the miner status page. Fan 1 is failing - is that the intake? Can I flip the fans the test them?

Maybe I'm an idiot, but I don't understand what you are asking. You have a S9, its been running for a week, you getting an error or something?

My question is #1 is the front fan spinning, #2 is the rear fan spinning? Based on how you answer that question, I think we may be able to determine whether it is the fan that is faulty, the connection, or the controller. As a side note, next time you order something from BITMAIN make sure you get some extra parts including a spare fan, cables, etc. They may come in handy down the road. I think you should stick with BITMAIN replacement fans, if you end up needing one. They are very heavy duty and are rated for the CFM and air pressure S9's need to stay cool.