Hi Pauline, I've never experienced your problem on my Tyros2 either. In addition to what the others have suggested, I recommend completely re-initializing the keyboard back to factory default settings. This can be accomplished by simultaneously holding down the keyboard's highest key (C7) while turning on your Tyros2.

If this doesn't solve the problem, I recommend contacting your dealer to get your Tyros2 fixed or replaced. Good luck. Please keep us posted.

Scott