Sure sounds like starting capacitors. Easy enough to replace. Youtube is your friend.
What model AC do you have? I just replaced one of mine yesterday. Hard to find them right now but Amazon saved the day. Weeks ago they had nothing.
This one is a Dometice Penguin II. I had to also change out the internal circuit board so it would play with the old 5 button thermostat. Easy enough. The installation was about 2.5 hours but I am not young and really picky. Had help lifting the new one onto the rv and taking the old one off,. A scaffold worked fantastic.