Roger, for whatever it is worth, I was having the same problem with my Kenwood KR-V8080 receiver. Her is how OFA told me to fix it. First I programed my RCVR with code 0314. Then enter an advanced code of 300. Then programed the RCVR with codee 0027. This allowed me to use all the functions such as switching between all the inputs.

If you want, I also have many of the advanced codes for 0027. Let me know.

Hope this helps