No problems except for the tact switches on both keyboards - and the LCD display which I cracked myself (This doesn't affect the functioning aspects of the keyboard).

I don't have the space in my trunk to carry an extra keyboard, so I always let out a sigh of relief at important gigs when the keyboard turns on and works. Luckily with this keyboard and the PSR740 that I used to have, every problem I've discovered at gigs were problems that would slowly get worse and not catastrophies. I had one complete failure of my old PSR740, but luckily I discovered it before I went to my gig.

My audiences go gaga over the sound of the PSR2000, so overall I'm very satisfied.

Beakybird