Dead Raven

Welp.. I was cruising along recording some drums, looked over and saw the raven go black. No power. I am hoping its the power supply (brick). I opened a case with Slate, but in the mean time, anyone with an MTi2, does the little green light on the power adapter go on even when not plugged into the raven? Not sure if it should be illuminated with wall power or does it need to be plugged into the raven.. 

thanks.. I really dont want to have to send the whole thing back. 

Looks like a standard 12V, 4.0 amp adapter. 

thanks

-D