Hi. I have a Roland E68 keyboard, which has velocity sensitive keys (this may or may not be relevant). It all works fine when played softly, but as soon as any key is hit with more force, the sound cuts out intermittently (so it sounds like Morse Code) and continues to do so until the key is released. It affects all notes equally and whilst one note is 'on the blink', any other note that is played, regardless of how hard, 'blinks' as well. The fault seems to fluctuate in severity - I have just tried it now and, for the problem to arise, I had to whack the keys harder than I ever would when playing for real, but yesterday it was happening just with normal 'expressive' playing. Has anyone encountered this problem with this or any other model of keyboard? Does anyone have any suggestions for a diagnosis or solution? Any help would be greatly appreciated.