They do a pretty good job keeping the machines running, but with that many games it can be tough. Hopefully you passed on the info on the games that weren't working so they could get to them.
I'm surprised that the AFM was beat up, they had one last year that was a fully restored machine, but it was on loan. I'm guessing that that one is gone and they replaced it with the beat up one? That's too bad, one of the main reasons I bought an AFM was because of how much I enjoyed it at the PHOF.
AF was working fine when I was there a year ago, so it hasn't been broke for 4 years btw.