Last Friday, I replaced Chassis Power Regulator board D060279 with D1000217 on the following AA/AI Chassis. S1102693 S1102694 S1202505 S1202506 S1102693 S1000250 This was to address overheating/over stressing of components on old power board. The units are located in the SEI and SUS Test Stands in the staging building. Filiberto Clara