Bob, since both the PSR 2000 and Tyros are exhibiting the same problem it leads me to think that the source of the problems are posssibly from an external source however ridiculous that may sound. Possibly faulty power leading to the Tyros and PSR 2000. Sometimes spikes occur in a power source, eg., 110 Volt source not only from the Power Company mishaps but also from things like lightening, and stormy weather, etc. Also if the Keyboards are exposed to high humidity or extremes in temperature that may also cause problems. If any liquid was spilled into the 'same' area of both Keyboards that could cause both Keyboards to have the same problem[s]. I'm sorry to hear your troubles but thankfully the Tyros is under warranty. But not the PSR 2000 I take it. You know, the PSR 2000 had a 2 year Manufacturers Warranty with it if you registered it with Yamaha.

Best regards,
Mike

[This message has been edited by keybplayer (edited 11-15-2003).]