What was found
FLT 882-CUN-CLT - ELECTRICAL SMELL - CREW REPORTED AVIONICS SMOKE ECAM MESSAGE AT GATE ALONG WITH STRONG ELECTRICAL SMELL IN COCKPIT. POWERED DOWN AIRCRAFT AND EVACUATED. MAINTENANCE REMOVED AND REPLACED THE AVIONIC VENT FILTER AND CABIN RECIRCULATION FILTERS. ALSO REPLACED THE AVIONIC EQUIPMENT VENTILATION COMPUTER AND AVIONIC SMOKE DETECTORS AS A PRECAUTION. ***SUPP*** WILL BE PROVIDED UPON REVIEW OF VENDOR TEARDOWN REPORTS FOR ROOT CAUSE.