Well I've moved recently so that might be it...I must have forgotten to enable the DC trigger when I setup and it has been on all this time (gulp) as you suggested...I wonder what shut it off...I know I didn't.

What I don't get is it worked last night, today I turn on the prepro as usual and just bass yet the standby light of the 770 was on. Turning the 770 on and off via the front switch did nothing, it never did the 'click and hum' startup...very curious.

One fear is that I have the wrong cable for the trigger, anyone know if its specific to the hardware?