What was found
POWER SUPPLY S/N'S 057R, 116R, 139R, 173R, 259R, AND 328R FOUND Q5 DAMAGED BY SHORT-CIRCUIT (S/N 173R). INSPECTION REVEALED MICA INSULATOR MIS-POSITIONED UNDER Q5 PERMITTING COLLECTOR TO SHORT TO CHASSIS (GROUND). INSPECTION OF ADJACENT COMPONENTS (CR19 AND Q6) REVEALED SAME CONDITION ALTHOUGH NO SHORT-CIRCUITS, YET. INSP OF REMAINING 5 UNITS REVEALED SAME CONDITION, ALTHOUGH NO SHORT-CIRCUITS, YET. IT IS UNKNOWN WHETHER THESE COMPONENTS (Q5, Q6, CR19) OR RESPECTIVE INSULATORS ARE ORIGINAL (FACTORY) OR ARE IN-SERVICE REPLACEMENTS. SUBMITTER RECOMMENDED MORE CARE BE GIVEN TO PROPER PLACEMENT OF MICA INSULATORS UNDER COMPONENTS.