Funny thing is I checked all those things. The switch definitely works fine and there's continuity between all those pins and no continuity between +5V and ground. I've put two different 74LVX04s in the unit and neither one has helped. Pin 53 of the Strongarm goes high and low as it should so the 74LVX04 should be working, but still the unit remains stuck in AC mode. Doesn't the power control PIC play some part in how this all works?

Stu