Unbelievable!

Set everything up, double checking everything and now there's even more problems.

I've only tried the one so far so still two to try but I'm absolutely baffled.
Powered it up and the fans start up... so far so good.
Then I look at the control board and there's no LEDs lighting up.
I double checked with the IP scanner and it's not showing up at all.
The three hashing boards have a green LED but you can feel the air from them is completely cool so there no hashing going on.
Looks like the control board is dead.

I've double checked with another PSU but still the same.