Where are you located? I'm in the NYC area, and there is a really great old school shop in Manhattan called Photo Tech. AFAIK, this may be the last photo repair shop in New York City.
Years back the light meters in both my FTN and F2SB went south, and I went to a multitude (at the time, late '90s) of repair shops and they all told me they couldn't fix them because there were no more parts available for them.
I finally wound up at Photo Tech and they told me up front they may not e able to fix them, but they would at least take a look. Scored points with me right there. Got a call two days later with an estimate for both. I was stunned. Those meters had been dead for years and I relied on my Sekonic L-428 and Polaris SPD100 meters for exposures. They not only fixed them both, they re-calibrated the FTN prism to run on modern batteries. Needless to say, I was impressed. The meters still work to this day.
So if you're still in a bind for a repair shop that stands a pretty good chance of fixing your body, check these guys out:http: