What was found
AT CRUISE AND NEAR MSP, CREW SMELLED AN ELECTRICAL ODOR. WENT TO STBY ON EQPT COOLING AND SHUTTING OFF GASPER AND RECIRC FANS. SMELL STARTED TO GO AWAY AND THEN CAME BACK FORA SPLIT SECOND AND THEN WENT AWAY AGAIN. SEEMED TO COME OUT FROM THE VENTS. MADE A PRECAUTIONARY LANDING INTO MSP. MTC IN PROGRESS REPLACING R1 WINDOW DUE TO TERMINAL BLOCK ATBOTTOM FOUND LOOSE AND ARCING. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS