What was found
WITH THE AIRCRAFT ON THE GROUND, CABIN DOOR OPEN, APU ON , APU BLEED AIR ON CABIN UPPER LTS ON, LOWER CABIN LTS ON , AIRSHOW ON, A STREAMING PUFF OF SMOKE EMITTED FROM THE LT UPPER SIDEWALL ABEAM, SEAT NR 3 AND THE SEAT NR 3 ENTERTAINMENT CONTROL PANEL. CABIN CONTROLLED SWITCHES HAVE BEEN TURNED OFF. NO CIRCUIT BREAKERS HAVE TRIPPED. CABIN HAS STRONG ODOR OF ELECTRICAL SMOKE. REMOVED AND REPLACED AUDIO/VIDEO MODULE. OPS CHECK GOOD AT THIS TIME. NO DEFECT NOTED. DONE IAW G-200 COMPLETION CENTER MAINTENANCE HANDBOOK CHAPTER 23-38-00. DID NOT DEPART.