it has been working fine since, it was a loose power connecter
Be careful about NOT over-tightening the screws in the green power connector for your asicminer blades --it is more of a spring action system as opposed to a true screw bearing down on a bare copper wire.
I got seven blades running in a bath of mineral oil that is circulated thru a small automotive transmission oil cooler that I places in my bathroom's sink that is constantly running cold water (water is free in my condo.)