Nigel, thanks. I do not have a manual so I do not have any idea where the fuse might be. And how much of a job is there to open the keyboard. I opened a psr2100 Yamaha and found a nightmare, 75% of all the connections were connected to the top of the keyboard. I had to disconnect 25% to get to the problem. Years back I opened a Kn 3000; a dream, everything was laid out and easy to get to.
I thought with all the knowledge on this forum we could help Bill Dickson with his problem.

John C.