What was found
AFTER SEPARTURE AT ABOUT 3000 FT MSO AMBER MASTER CAUTION LIGHT ILLUMINATED, MOMENTARILY. ALSO, ELECT LOOK UP LIGHT ON, BOTH WENT OUT AFTER 2 TO 3 SECONDS. REPEATED EVERY 3 TO 4 SECONDS FOR THE NEXT 1=30 UNTIL LANDING, CEASED ON TOUCH DOWN. THEN CHECKING STANDBY GEN SHOWED ABOUT 25V IN OFF POSITION, CYCLED ON/OFF AND VOLTAGE FINALLY ZEROED. NO OVERHEAD ELECT LIGHT ON. MAINTENANCE COULD NOT DUPLICATE, OPERATED IN GROUND/AIR MODE, NO DEFECTS AT THIS TIME. REPLACED PCB WQ5. OPS CHECK GOOD AT THIS TIME.