I have a quote from Shutterbug in 2004. It may be out of date; but, it might be worth a try. Essex Camera (accessible online) in NJ used to have a price listed for repair of the Samurai; I'm not sure if they still do, but that might be worth a try, too.
Here's the quotation: <<Yashica Samurai Repair
reference from 2004 Shutterbug
. I just spoke with a person at Kyocera, the importer of Yashica/Contax products in the U.S.A. Although they do have some Samurai parts, they do not do repairs. But, they told me this firm does: Nippon Photo Clinic, 920 Broadway, Suite 703, New York, NY 10010; (212) 982-3177. You might want to contact them to determine if they can fix your members’ half-frame cameras.>>
I have a Sam 3 that needs repair, too (resetting after replacement of system battery); but, I keep putting it off because I have another one from a pawnshop that still works.