Update: Second hashboard on the E3 has shit the bed.
Super disappointed in the quality of this shipment. When I received it, the E3 had one DOA board, plus the metal around the control board was loose and rattling. Now a second board has failed? Come on.
Bitmain is pulling the "Send it in for warranty" card.
these are old chips bro, refurbished boards been running for at least a year, no suprise here