A computer repair man, a friend of min,e could not repair my Kn7000. The keys are not sending a message to the main part of the keyboard. Everything else works well. Some friends here on SZ have given me the name of keyboard repair men, I’ll do that next.

Another suggestion I received was to midi the keyboard with a controller to isolate the problem. I tried it, I can play the kn7000 sounds.
My question before buying: Which would be the best to use, a midi controller or an arranger keyboard?

I’m not giving up yet, John C.