Did you possibly “lock” the tuning? Tapping RATE will unlock it if you did. Grant NQ5T > On Oct 27, 2015, at 10:44 AM, Gregory Brown <gregorysbrown at gmail.com> wrote: > > This morning the main knob on my KX3 stopped responding. It doesn't tune > frequencies or menu settings. > > It was working fine an hour ago. > > Any ideas? >