1 failed board (DOA) for me.  Detects the board and chip temp, but shows no chips.
Tried a working controller port, reset to defaults, still no response from Bitmain (Holidays).

Given the Feb holiday's, won't be cost effective to send the unit back with all the competition from Bitmain.
Contemplating if it is even work sending the hash board back, given the price of postage and low price of the A3's and risk of opening,
Too many stories \ warnings never to send hash-boards back by themselves. (heatsyncs come off, damage pins).

Something doesn't seem quite right with the software, trying to init this board with a temp offset of -11??  Hopefully support respond and have an updated firmware.

If I look at the hash rate, it's even like the board occasionally comes on-line and hashes then goes offline.