As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - CREW REPORTED ELECTRICAL HAZE VISIBLE IN REAR OF AIRCRAFT ACCOMPANIED BY ELECTRICAL FUMES SMELL. EMERGENCY DECLARED FLIGHT RETURNED SFO LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED ROW 30ABC POWER PORT POWER SUPPLY. SYSTEM GROUND CHECK NORMAL OPERATION.