This might be a stupid question, but, just hooked up 4 new S9, and i cant see any hashboards on any of them on the miner status page.

I havent used s9 since batch 1, is this a normal problem? Surely not all 4 are DOA?

They are powered by evga 1600 g2 and bitmain psu's.

Any idea whats going on here?