About Us Learn about our surgeon grade rework and repair services, by the book and guaranteed. Repair and Rework Guidebook Our guidebook should be helpful to anyone who works with circuit board assemblies. Base Board Repair Is it possible to repair a circuit board with a broken corner? Conductor, Circuitry and Plated Hole Repair Learn about our services for conductor and plated hole repair ECO, Upgrade and Modification Services Discover our advanced engineering change and upgrade capabilities. SMT and BGA Pad Repair Surface mount and BGA pad repair are routine operations at Circuit Technology Center. SMT and Through Hole Component Rework Today's BGA and surface mount components present an array of rework challenges.