What happened on mine (and just realized it was a brand new one just got in 10 days ago) was the item pulled away from the motherboard completely. Just fell off. Piss poor workmanship all done by computers.
90 days of Warrenty: If your antminer damaged during the warrenty, just ship back the units and we replace you a new ones.
Business plans/proporals, custom service and RMA request:
info@bitmaintech.comMight be worth a try too , seems like such a waste , parts won't get you much of your
money back.