Madison Electric Service provides motor repair and electrical contracting services in Jackson, Tenn. It is a branch of Tri-State Armature & Electrical Works. With the support of its parent company s network, Madison Electric Service offers scheduled and emergency repairs of common electric systems found in automobile engines. Its repair services include dynamometer testing, dynamic balancing, electronic drive and printed circuit board work, and systems modification and upgrades. The company also provides field services, such as vibration analysis, cleaning and inspection, and other contract maintenance. Founded in 1920, Tri-State Armature & Electrical Works offers a line of technical services in the mid-South. The industries it serves include a variety of businesses, such as pulp and paper, plastics, steel, food processing and chemical.