Today I found an authorized Hasselblad and Leica repairman, Steve Choi, in the Los Angeles California area. He did a minor repair for me, no charge. I have not used him yet for a major Hasselblad repair. I have no connection with him other than I met him today. Steve has been in business since 1962.
Steve's Camera Service Center
4355 Sepulveda Boulevard
Culver City, CA 90230