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.
You should send it back but obviously only if they give you RMA number. Return shipping will be their problem and no tax on return either.