What was found
MAD - THE CAPTAIN'S OVERHEAD MAP LIGHT HAD A SHORT AND SOME SMOKE, IT CONTINUED TO WORK. THE CIRCUIT BREAKER WAS PULLED AND COLLARED 722VU, R40. THIS CIRCUIT BREAKER WILL ALSO MAKE THE FIRST OFFICER'S MAP LIGHT INOPERATIVE. MAINTENANCE INSPECTED WIRING IN THE OVERHEAD FOR THE CAPTAIN'S MAP LIGHT ASSEMBLY, NO DEFECTS WERE NOTED. THE LIGHT ASSEMBLY WAS REPLACED AND RESET CIRCUIT BREAKER R40. OPERATIONAL TESTS ARE SATISFACTORY AND MEL REMOVED.