What was found
FLT 453 BOS-FLL, CREW DECLARED EMERGENCY AND AIRCRAFT DIVERTED TO MCO DUE TO SEC 3, FAC 2 FAULTS, F/O SCREENS AND LOWER ECAM WENT DARK AND EVENTUALLY CAME BACK. CABIN LIGHTS ALSO WENT OUT AND FLICKERED. REMOVED AND REPLACED IDG NR 2 AND OPS TEST NORMAL. PERFORMED TEST FLIGHT NO FAULT NOTED.