Thanks Bernie and Bill.
Bill, I think you are on the right track but at this stage I am not able to adjust or change the settings,(probably my lack of understanding the technology). I get to the CHORD section but nothing changes to eradicate this annoying sound. Surely this would not be a normal default setting as it does not happen all the time???? Also it is edited out if I take the Memory off in the Mode section, but this then edits out all of the sustain. Could you take me through it step by step please???
PS While searching through the menu section, I have discovered other features which I did not realise existed.

Ray