As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED TURNBACK TO IAH, DUE TO ELECTRICAL FUMES SMELL.(<P>FOUND M00897 ELECTRICAL LOAD CONTROL UNIT WITH LOOSE HARDWARE AND BURNT PLASTIC COVERING. REMOVED AND REPLACED ELCU IAW B767 AMM 29-11-14, OPS CHECK GOOD. SMELL IS NOW FAINT AND GOING AWAY. IPC 29-11-65-01 #40 (EFF. 996)</P>)