I have a Samsung ME16k3000AS in a rental property that is just over 2 yrs old. I already replaced the internal 20A fuse before the current renters moved in and don't know how well it worked leading up to that (evicted previous tenants). It worked for a few months and the renter called and said the microwave didn't work, they pressed start and the unit shut down. I figured same issue, the internal fuse was bad so I replaced the fuse again and blew as soon as I started the microwave. Now I'm thinking there is a bigger issue. I did some looking online and looks like the capacitor may be the issue, but wanted more feedback before I go and buy parts to throw at it.

What are possible causes of this?

Thanks,
Eric