A year or two ago, I sold my Yamaha PSRS900 to Bill half-way-live-music. "We" later sold it to a gentlemen in Hayneville, LA.
He called yesterday and was having the classic display problem, where an LCD goes out and wreaks havoc. He was only getting static when he turned it on.
I called Yamaha and was lucky enough for Steve Deming to answer the phone. He said that Yamaha would take care of the problem, even though the unit was well out of warranty.
Now that's service above and beyond what was "necessary". Kudos to Steve and to Yamaha!
DonM