Very cool. Tbone nailed it being one of those two. I would agree it is is likely the cap, rather than the resistor, that is your issue.
As far as resistor testing, you typically need to check them out of circuit so you're measuring just the resistor, and not everything else that is in parallel with it.
You can check the cap with an ohmmeter to see if it is shorted, but if open, you won't know for sure if checking with just an ohmmeter.