Hello,
First post here but I've been lurking for a while.
I have one uppity S17 Pro that seems to be highly sensitive to low temperatures, much more so than the others. The main symptom is when incoming air gets cold (like 35F or below), it will essentially go into a reboot loop. It will boot up and start hashing for ~30-45 seconds, then it appears to lose all 3 boards and restart itself. Sometimes I can coax it back online but it's been gradually getting worse over the last couple months. Then, just a few days ago, I started seeing intermittent, slightly erratic chip temp readings from one board. This device's stability is now so low I'm at the point where I want to send it out for repair, but I thought I'd throw this out here in case it turns out to be something I can diag/repair myself.
For comparison, the other miners will run happily until incoming air gets into the teens (F). Then, they will typically reboot once and run happily again for 1-6 hours before they do it again, if they do it again. Yes, I'm sure you'll tell me that's bad for them, and I normally modulate the incoming cooling air temp but there's some diagnostic value in knowing that difference exists.
I'm running Braiins OS+, just installed the new 21.12.1 release. Didn't improve anything. Changing the power settings doesn't effect anything. If I look at the log, I see lots of "TX fifo on hashboard (n) is empty" where (n) is 1, 2, or 3. I can post more of the log if you'd like to read it. There's no mention of temp sensors or anything else. The fact that the "TX fifo" errors occur simultaneously on all three hashboards has me thinking it might be a control board issue?
Thank you for your time.