Thanks for your suggestions guys - My feeling is that the user memory has become "screwed up" (technical term here in the UK - lol) which may just be garbled data stored in there or actual chip failure!!

I looked everywhere on the net yesterday to try and find a hard reset for the Tyros but hopefully now that Scott L has told me how I'm keeping my fingers crossed that this will work.

I will try all your suggestions when I have finished work here in a few hours and will keep you guys posted.

You know, it's ironic tha I have had Ketron/Solton products now continuously for the past 11 years and have never had a single problem with them. I've had the Tyros for almost a year and had 2 key contact problems and now this - Just when I was getting excited about the new Tyros this sort of thing shakes your faith in their products.

Thanks all for your help - Keith