If that's the case get a hold of Canaan through a support ticket, or try to find someone in your country willing to part with a working one.
Which the OP should have started right after the initial troubleshooting was done...
Again, posting their trouble in the Avalon thread would have gotten them to this point much much faster... Had they bothered to read it they would have seen others that had same issue and what the cause is. I believe 1st showed up with some of the ones from huge order f*up in August when Canaan was scrambling to get as many miners made/shipped as possible.
Having same issue all green on miner everything connected green auc 3 not mining. seems like only issue is controller not communicating with miner
Anyone find any solutions besides new auc3