Come on...that used G1000 you bought was used as a boat anchor in Lake Erie.....and you didn't replace all the buttons..they were button contact covers

I used the G1000 for more than 9 years..played it everyday, without a single failure...Now that is a documented thumbs up

Look at folks are saying/selling about their PSR keyboards ..for every Gary or Donny (success stories)..there are legitament concerns..I have read at least a dozen folks that had problems with the lower Yamaha keyboards(just on SZ)...so we can't rule out that the PSR are not made for the road..That is why they sell over priced Tyros

It's not like you didn't have to repair key contacts on your older PSR models...they just are not made as well as they could be..
