Condenser Fan Running Backwards!
Thanks. I looked at the wiring (after pulling the disconnect, of course). Thought I might see some signs of a bad cap (case swelling, etc.). Nothing obvious. But when I plugged in the disconnect, the compressor started but the fan didn't. However, I could take a stick and manually get the blades started in the right direction, whereupon the fan slowly spun up and is now operating normally. Of course the next cycle will likely blow that to smithereens...
(And yes, it is a residential single phase unit.)