What kind of PSU are you using ?
this error is very like one those when cables are not plugged in properly but if you have check that out already then its weird
I've tried 3 different PSU's so far, all 1200W+ Gold and all work fine on my other mining equipment. Even the SD recovery isn't happening......it ain't looking good eh?

SP-Tech, what's the loop to board mapping and are the two down loops on one board?