Only issue I had was with one of my PSR-3000, and that was a bad key contact. I simply switched over to my back-up PSR-3000, and got Yamaha to send me a complete set of key contacts.

When I had it apart, I simply replaced all of them and, as far as I know, it's still giving good service to a friend of mine who bought it when I got the PSR-S910's. The back-up 3K was sold to a duo who use it to play SMF, and it still works flawlessly.

Considering the amount of serious playing time I put on that gigging 3K, it really didn't owe me anything, and like Gary said, these things are tougher than we realize.

Of course, they were always transported in cases, and I never left them in the car overnight.

If you play quite often and it's your main (or exclusive) source of income, it's wise to have a back-up keyboard, preferably a similar model. Without a back-up, it's like a taxi driver not having a spare tire...down time can mean serious loss of $$$.

Ian