I would guess dirty centrifugal switch too, a start cap wouldn't go out just sitting there and if it did when you turned it on it would have let the magic smoke out
If you have a 3-4 lb soft set mallet it if you smack it on the rear end on the steel part of the motor it might knock the dirt off the contact, or you can blow compressed air through the slots on the back of the motor sometimes that will cure it too.
But if it doesn't take the bell end off by where the wires go in being fragile with the motor use a piece of sand paper and get between the contacts of the cent switch and clean them up
It would be easier if you take the motor out, possibly. I had to do it on my band saw a couple weeks ago, couldn't believe how much sawdust I blew out of it, but shooting the air in the slots worked for me
There is no app for experience