My first erupter blade arrived and I think it may be decfective.  I have a brand new power supply and have wired up the included plug and verified the voltages with my
multimeter (multiple 12v yellow and black ground wires from my psu).  When I plug in the unit and switch on the PSU, the green LED illuminates, I here a click, then about 0.5-1.0 seconds later the PSU powers down.  I think there might be a short somewhere in the blade.  It's 100% reproducible every time I attempt to turn the unit on.  if the unit is not plugged in, with the green plug wired up, I do not have any issues and read 12v across the screws so I'm pretty sure it's not my wiring.

Any ideas?

So how do we plug the blade into a PSU? First we need to tell the PSU to always be on, as there isn't a motherboard to do this. We use the old paperclip trick. http://www.corsair.com/en/blog/testing-your-corsair-power-supply Similar to that but instead of using it as a test, we'll cut the paperclip short and tape it up for safety.