Like Audrey I had many problems with the Kn6000. After many calls and letters they repulsed my Kn6000 with a Kn6500 without charge. My problem was different than yours but I feel the keyboard in general had many problems. Many as compared to none on all the other Technics I have owned.

This does not solve your problem, it’s just more Kn6000 history.

John C.