I just received another S1 today and this one was used big time. Lots of Chinese dust all over the PCB boards and fan blades. Should I contact them and have them replace it?
Also might be a sign of things running out and new model coming out.
You are lucky that your S1 works.
I received heavily used and semi-dead S1 from them.
All covered in dust, heavy smell of burnt electronics, a lot of dead chips - one blade shows 8 ASICs instead of 32.
It hashes only at around 120 GH/s and sometimes just stops hashing with beeping sound, needs power cycle to start again.
I paid 130 euros customs tax for this unit, and it would cost around 200 euros to ship it back to Bitmain and then I have to pay another 130 euros to customs for the replacement unit.
Just does not worth it.
So Bitmain sold me a dead unit and now just stopped responding to my messages.