We went out for dinner, came home, and our central air conditioning
system was not working. No breakers were tripped. The diagnostic lights
on the compressor are blinking normal. I thought maybe it was the fuses
on the condenser. Ran to Home Depot and changed those, and that doesn't
seem to be the problem.

If we turn the system to cool, the fan comes on, and it seems like it's
trying to kick the condenser over (the lights dim a little in the
house), but it's just not going.

Any thoughts? Please help, it's HOT.