I just bought a Casio CZ-101 that's in (visually) perfect condition, but whenever I use the "Tone Mix" function, the polyphony stops and I can only play one note at a time. Here's the troubleshooting I've already done:
I've done the factory reset on it.
I've tried running it off batteries instead of the power cord.
I've tried using both the internal and preset sounds.
I'm only using the singular line selection.
Solo mode is not engaged.
The keyboard clearly has the capacity for polyphony, but something about the tone mix button (which is very important to me) negates it. Anybody have any ideas?
