What was found
COCKPIT FLOOD LIGHT: WITH APU RUNNING TRIED TO DIM THE FLOOD LIGHTS WITH THE RHEOSTAT KNOB. RESULTED IN A BRIGHT FLASH BEHIND THE KNOB, BURNING ODOR, AND THE CIRCUIT BREAKER POPPING CORRECTIVE ACTION: GAINED ACCESS TO FLOOD LIGHT RHEOSTAT BY REMOVING SWITCH PANEL REMOVED AND REPLACED RHEOSTAT P/N S3495-2.5K WITH NEW I/A/W CE-560XLS AMM 31-10-01. NO BURNING ODOR NOTED, NO OTHER DEFECTS NOTED, OPS CHECK GOOD. INSTALLED SWITCH PANEL I/A/W CE-560XLS AMM 31-10-00.