Are you able to SSH in during one of those states and see what the cgminer window reports?
what command do I run while I am ssh into the S4 to check what the cgminer is doing?
I'm not actually sure off the top of my head, to get cgminer window. Someone else will know and be around soon enough.
it looks like cgminer is still going after the box stops hashing and the fans die down to about 2700
PID PPID USER STAT VSZ %VSZ %CPU COMMAND
31554 31553 root S < 147m 30% 98% /usr/bin/cgminer --bitmain-dev /dev/bi
I am working on disconnecting each blade and checking to see if the problem persists. I dont have another power supply - my other S4 has PCI-E connectors and this one does not. I dont like the idea but if the eliminating the blades dont work, bitmain support suggested i take my working S4 offline and use the motherboard from that one on the sick S4...
I am about 24 hours away from confirming the fix - i will post back if it works.