guys i just received a defective D3 unit, will bitmain pay for the return shipping costs?? there return process seems poor
Definitely try inspecting whats wrong first, you dont want to send the whole device, it will cost a lot, depending where are you located.
I am in the UK mate- the top hashboard is loosing its performance and throwing X instead of O its dropping to around 13Ghz. from 19.3