re: Question about testing capacitors on my camper a/c

Yes, when i switch from fan to cool, I can hear the "buzz" of the compressor coming on and the lights really, really dim. Didn't use to dim like that before. All of that happens in about 3 seconds time. I think I'm just going to order a set of new capacitors and go from there. I have a 2nd unit in the bedroom that has the same thermostat. After I replace the capacitors, if it still doesn't work, I guess I'll swap wall thermostats to eliminate that. If that doesn't work, I'll replace the board someone mentioned. And of course, if all else fails I'll get another ac. If I do end up needing to replace it I think I'm going with Coleman instead of Dometic. I'm reading a lot of people do away with the Dometic units in favor of the Coleman.