My truck stopped running so I traded it in on a new one. Dealer showed up with tow truck to haul my old one away. He poured some gas into my old truck and drove it away.
If you put a new capacitor on a bad motor you can burn the capicitor up in seconds.If you put a new motor on a bad capacitor it won't run. In both cases you've wasted time and money. New motor can run a couple of hundred bucks.And often is not returnable, especially if you damaged it by trying to run it of bad cap.
The problem may be neither, without checking each part you could wind up will he nill he replacing every part in the unit. A pro will check the parts, he may even try a heavy duty jump start capacitor.
The damage to parts may be caused by another problem, that could just damage your new parts. But in this case my bet is on bad capacitor, usually the case, new none pcb caps just don't last as long, heat gets to them, especially if blower is after heat source. Replacing parts is not fixing anything,
your just a part replacer, where's the glory in that? This is a DIY forum after all.