I've been using;
Quality Light Metric Co
7095 Hollywood Boulevard, Los Angeles, CA 90028
since the late '70s. They are the finest. I wish all companies were this good. So far as I know they are the primary or only exposure meter repair service to Hollywood. If it can be fixed they will do it, if it costs more that buying another, they will tell you.
I wish all photo repair & dealers were this good, Jay Drew