see my old posts in this thread. I wrote here about it but nobody wants to hear me. Photos of burnt S5 are in the thread of the picture your mining... only one time fall me internet connection..
I am skeptical about s7 if bitmain no fix this dangerous FAIL. One mistake and you lose 2000usd(miner+psu+tax). If you put them in the data center, you are waiting for nearly a year return on investment.
I saw it. I just never responded to it. I'm going to find out if it fixed it one way or the other fairly soon if no one else does.