What was found
PHL FLT1776 - EN ROUTE FROM ORF TO PHL, CREW REPORTED A BURNING SMELL IN THE FLIGHT DECK AND FUMES IN THE CABIN. MULTIPLE SYSTEM LIGHTS ON OVERHEAD PANEL WERE ILLUMINATED AND THE CIRCUIT BREAKER FOR THE NR 2 TRANSFORMER RECTIFIER TRIPS. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 TRANSFORMER RECTIFIER AND FOUND THE T2 AND T3 FEEDER CABLES ON NR 2 ENGINE CHAFED ON BRACKET FOR FEEDER CABLE CLAMP. REPAIRED CABLE INSULATION PER SWPM 20-10-13 AND REPOSITIONED CABLES FOR CLEARANCE. OPERATIONAL CHECK OF NR 2 ENGINE AC AND DC SYSTEMS NORMAL.