I have bought Antminer A3, and it has a defect from the box! Chain #2 is not working! I have wrote to Bitmain 2.5 month ago, I have create a repair ticket but its status still uncollected!! About 80 days no answer from Bitmain! My ticket was opened 10.05.2018 now is 26.07.2018, still no answer from Bitmain! My ticket ID 03320180510213458255850f0F0t0617.
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https://imgur.com/a/EkWN7mr 2)
https://imgur.com/IInQjbzHi, I think you may want to chase them on the Twitter and other Social media APPs, and follow up with support emails?
I doubt they would read your message here.