What was found
DFW - FLT 1329 - DURING CLIMB-OUT, AIRCRAFT EMERGENCY BUS OFF LIGHT ILLUMINATED AND CAPTAINS INSTRUMENTS WENT BLANK. THE FIRST OFFICER SMELLED SMOKE IN THE COCKPIT. AIRCRAFT AIR INTERRUPTED AND RETURNED DFW AND LANDED OVERWEIGHT WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND EMERGENCY POWER TRANSFER RELAY FAULTY. REPLACED EMERGENCY POWER TRANSFER RELAY. ACCOMPLISHED OVERWEIGHT LANDING INSPECTION WITH NO FINDINGS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)