Hello
I have also some crashs during last days from low voltage reset boards, at this moment ( not yet totally confirmed ) i suspect form internet connection: when it stops during few seconds (maybe or more than 30 seconds) boards lower the hash and cool down enough to be unable to restart by its own. Normal boards aren't affected. Discovered this during a router restart.
I changed setup putting this board on not cooled area: hash will be lowered but expect more immunity from connection drop-outs
Regards
Edit: 4H+ running: I think 26º Ambient temperature helps too ...
Yes I see the same. If I have connection problems for more then seconds I have resets... But I have them in about 30C ambient temperature and they restart themselves... They just heat up my workshop that much and I don't have a window open over the nonworking hours...
EDIT: I also figure out why after first 20 boards I didn't see any big problem. Ambient temperature was at that time at about 30C... Since I put to work first 10 boards that I have assemble.