If you want a commercial shop, I think Capital Game Brokers are still
doing repair work. They are near the NC Fairgrounds. They are not
cheap. Depending on what game you have and the type of repair, you may
find someone who can help via the Pinball Register :
http://www.xmission.com/~daina/tpcr/index.html. rec.games.pinball has
some very helpful folks who can offer specific advise if you want to try
some of it yourself.
-don