I have an Apple II Plus that does absolutely nothing when the power switch is flipped. However, the power supply itself is good, as I was able to hook it up to another motherboard and it powered it just fine.
But from the problematic II Plus I get no beep, no video, not even the power indicator light on the keyboard comes on...completely dead.
I've tried fiddling with the connector between the power supply and motherboard to no effect, and have tried reseating the ICs to no avail.
Short of doing an IC-by-IC swap from my known good board, can someone suggest which components to look at first given the completely dead symptoms?