Thanks Roger for that suggestion,

That thought is really a long shot.
As the keyboard hasn't been used much in the last couple of months after I had a hand op. I can't be sure what day it faltered.
I was given several discs and they sure won't get in a keyboard again unless they are formated.

I presume once a floppy is formatted it is clear to re-use ?

I did have pleasure in destroying maybe the last disc I had put in the now presumably corrupt KN 7000 Instrument -----
I have however been able to re- purchase a K7 that we gave to our grandchildren and they now have our KN1000
At the moment our thinking is to let our faulty KN7000 go to our 12 year old local Grandaugher as she is starting to learn the piano----- It will play a single instrument OK as long as no rhymth is used.

Rog I will email you a photo of our set-up
Dave L.