Just unboxed a couple S5's I bought a while back and found one of them had obviously been used excessively. It has soot all over the heatsink. I have submitted a WTF email to Bitmain...I guess they really are going downhill
http://i.imgur.com/HFtddQ7.jpgLet us know how it goes! That was not the "2nd hand" unit was it?
It was still a batch that showed new right?Bitmain has been doing this for quite some time now - Passing off obviously used and dirty units as "brand new". I've received dirty and used "brand new units" myself.