I do know there is one here in Kansas City, but it is very pricey. Also, Amigakit is now doing board repairs. There is also a gentleman in, I believe New Zealand whom does repairs as well. I have his e-mail address if you wish to contact him, he's very busy though. If I remember the phone number for the gentleman here in KC I will add that later. The e-mail address for the gentleman in New Zealand is
ahoffman@clear.net.nz and his name is Anthony Hoffman. He will contact you back with a rough estimate shortly after e-mailing him. I understand he is highly recommended.
Nathan