Hi Fran,
I know of an excellent man in Fresno, California. He works exclusively on Technics organs and keyboards. Unfortunately, he is quite a distance from you. This man coverted a KN7000 that I bought in the U.K. to the power for the United States. He ordered the LAST POWER SUPPLY that Panasonic had. This was about two years ago. If I were you, I would check organ repair rather than general music repair shops. You may be doing this anyway. I'm hoping it is a minor situation and can be quickly resolved.
Here is an odd thing that happened to me about a week ago. I had the keyboard on and later when I left it for a moment to check on something and came back, walking across the carpet created a slight shock when I touched one of the buttons. The keyboard made a soft clicking noise and none of the buttons would perform. I really panicked. I turned off the keyboard and turned it back on and everything was fine. I hope that doesn't happen again.
Good luck in your search.
Scott