What was found
ELECTRICAL SMELL STARTED IN CRUISE VERY FAINTLY.DONNED OXYGEN MASKS AND RAN SMOKE CHECKLIST. BLEEDS WERE TURNED OFF SMELL GOT STRONGER DURING DESCENDED AND DISSIPATED AFTER OPENING THE DOOR. NO SMOKE IN THE FLIGHT DECK. FLIGHT ATTENDANT B ALSO SMELLED THE SMELL WAS LIKE A FAINT ELECTRICAL BURNING SMELL. REMOVED FROM SERVICE. INSPECTED AND FOUND RELAY 3000 K5 TERMINAL A2 AND WIRE 86B-08-2 BURNT TERMINAL. REMOVED AND REPLACED RELAY IAW 30-41-01-000-802/400-802 STEP 4A. REPLACED WIRE TERMINAL IAW EC 6-30-0150. C/W AMM 30-30-00 OPS CHECK OF PITOT STATIC ANTI ICING SYSTEM ALL CHECK GOOD NO ELECTRICAL SMELL/SMOKE/BURNT TERMINALS. RETURNED TO SERVICE.