Where can I get a Luxman receiver serviced?

Hi- I have an old Luxman R-117 receiver and the tuner section has stopped functioning. Can anyone recommend a service center in the San Francisco Bay Area that could repair the tuner. Any help would be much appreciated.
Steve Sank in NM
Doug Siegel Audio Specialties Portland, OR 503 257 3206. He has my Luxman 1120A right now and just finished a friend's 580 integrated.