What was found
ACTUATOR LIGHT CAME ON WHILE HOVERING AT PAD; MAINTENANCE ATTEMPTED RESET BUT COULD NOT CURE. DURING T/F EVALUATION FOR ACTUATOR CAUTION, APPROXIMATELY 15 MINUTES AT A HOVER AND THE AP1 &AP2 ON, YAW A TRIM, CYCLIC A TRIM AND FORCE TRIM ON; RECEIVED NO ACTUATOR LIGHT ON THE CAD. SWITCHED OFF THE YAW A TRIM, CYCLIC A TRIM AND THE FORCE TRIM OFF, THE ACTUATOR LIGHT ON THE CAD ILLUMINATED AND THE ABMER P ON THE PFD ALSO ILLUMINATED. YAW SEMA WAS REPLACED IAW AMM 67-10-00, 4-8.