I have dealt with this one many times.  for some reason the fix i have found is:

unplug PSU and disconnect ALL power leads.  let it sit fr a few minutes.  hook it all up again and wait for the full boot.  so far 100% sucess w this.  and always its related to power interruption.

Like the title says. I have a few (37) S9 running.  This is my first failure like this.

Reed LEDs all solid (see pic)
Dashboard shows asics missing, no temp reading,and insignificant hashing.



I've switched around the power leads. Restarted with fresh firmware Etc. Now 99% sure this is a warranty replacement.   Kills me to send a whole Miner back in the middle of this Bcash/ BTC Civil War. Any ideas from you guys?