Yamaha PF-70 Reset
I have recently acquired an old Yamaha PF-70 keyboard. I am just learning to play piano and needed something to practice on. After messing about with it for an hour or so it has stopped playing. Now it only makes weird muted noises and is just really odd. I am almost sure I messed it up somehow. Anyway, is there any way to do a factory reset on it or something so that I can get back to playing it like a normal piano?