[Highland Park] Sewing Machine service at home?

Does anyone know of anyone who services sewing machines in your home? I have a sewing machine in a cabinet I'd like to give to my niece, but would like to get it in tip-top condition first. Alternatively, does anyone know of a resource that tells you what/how to do this yourself? Thanks in advance, PAM   "Perfect balance is an illusion-- just try for upright."