I rebooted my Antminer s2 and now it's has a blank screen on the lcd and it's not mining anymore. What do i do now? I email bitmain but they haven't answer me.

I just got done swapping out the PSU on my second S2. Every time I put the cover back on the thing I get that problem - it never starts.
I take the cover back off, reseat everything, and power it on, and it works.
So for now it's running with the cover off.
M
A naked S2 is better than a naked woman.