What was found
EQUIP COOLING OVERHEAT LIGHT ILLUMINATED AFTER T/O. STANDBY SELECTED, NO GOOD. OVRD SELECTED, NO COOLING LIGHT ILLUM. CREW NOTICED SOME ELECTRICAL SMELL. AIR TURNBACK TO MUC. BITE CHECKS ALL OK. EICAS MTC MSG FWD EQ SUPPLY FLOW DETECTOR. CLEANED SAME AND REMOVED AND REPLACED FWD EXHAUST FAN. ALL CHECKS GOOD. MCC FOLLOW-UP TO REMOVED AND REPLACED FWD EQUIP FLOW DETECTOR.