:lol: I love old threads. Do you still have that DOA DuoDock? If you do and it's the PSU that died (especially if there was clicking involved?) there's an easy fix for the most common failure point.

IIRC, the PowerCache adapter for the II & IIcx plugged into the CPU and MMU sockets.

You might want to try pulling all socketed ICs and re-seating them before doing any further testing.