What was found
MSP - INFLIGHT NRT-ORD. CREW REPORTED FIRST CLASS WARMING OVENS TOO HOT CAUSING ELECTRICAL SMELL. EMERGENCY DECLARED FLIGHT DIVERTED MSP LANDED WITHOUT INCIDENT. FOUND COMPARTMENT 1 WARMING OVEN ABOVE NORMAL HEAT TEMPERATURE BUT NO ELECTRICAL OR OTHER ODORS DETECTED. DEFERRED WARMING OVEN 1 IN FC DEACTIVATED PER NEF 25-33A. REPLACED FIRST CLASS NUMBER 1 WARMING OVEN AT ORD ON 09/19/2011. SYSTEM GROUND CHECK NORMAL OPERATION.