Since your blower and condenser both failed to start at the same time, that indicates some sort of control issues, so check T-stat, control board, and the wires in between first.

What is a good way to check wiring? A youtube video showed measuring 24V at the thermostat as a sign that wire is good, but which wires? Common and Rc? Which pins can I jumper to simulate an AC on request?

This post was edited by madymo3d on Wed, May 28, 14 at 16:05

OK, jump R and G ------blower (FAN ON)
jump R and Y ------condenser
jump R, G and Y------AC on (COOL)
If you measure Volts, you should get 24V between R and G, also between R and Y.

Thanks for the wire color info.
Somehow it's working now after I jumpered Rc to Y and confirmed AC works (blower fan even came on without having to jump to G). Given the jumper results, I concluded the thermostat must be broken. So I went out and bought a t-stat. Before installint the new one, I put the old one back just for giggles, and lo and behold, it's working now. Guess I have a spare t-stat now.

Good, some control board force G on when you connect Y, since if only condenser is running without the blower, the compressor may get damaged.