What was found
ARCHING / SMOKE, FLIGHT CREW REPORTED WIRES IN CAPTAINS SLIDING WINDOW POST CONNECTED TO READING LIGHT SHORED OUT WITH VISIBLE ARCHING AND SMOKE, A SMALL HOLE BURNED THROUGH PLASTIC COVER. MAINTENANCE PULLED AND COLLARED CAPTAINS READING LIGHT CIRCUIT BREAKER, ISSUED MEL 33-10-01, COND. 1 COCKPIT/INST PANEL LIGHTS INOPERATIVE. MAINTENANCE REMOVED AND REPLACED CAPTAINS READING LIGHT ON SLIDING WINDOW, OPERATIONAL CHECK GOOD.