Rebuild Service Fast Repair and Rebuild Service for your Phase Drive A. Fischer Phase Drives offers a reasonably priced and fast rebuild service for your Phase Drive. Every Phase Drive sent in for rebuild goes through a thorough cleaning process and an extensive inspection process by our trained technicians. Upon completing the inspection, a rebuild estimate is issued to the customer. Once approved by the customer, our technicians will restore all exterior housings to original specifications, replace all critical internal parts, and when completely re-assembled, the Phase Drive will be inspected and dynamically tested before being shipped. 90 Day Warranty All Phase Drive repairs are covered by a 90 Day Limited Warranty