We were gone and when we came back the Outlaw 770 was powered on, but nothing was being sent thru it. Tried powering off, front button, rear button, unplugging with zero success. No triggers involved. Took several of the speakers and put them into a receiver as 6.1 output for a temporary test of the rest of the system and everything works just fine. So its clearly a problem with the Outlaw.

Anybody got any ideas as to why it won't pass signals thru?

PS: The outlaw is multiply protected against surges by several different surge protectors (at least 3 levels) so it couldn't have received any high-voltage spikes.