As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR CREW REPORTED ELECTRICAL SMELL & HAZE IN REAR OF AIRCRAFT NEAR LT & RT NR 4 DOORS. TURNED OFF INFLIGHT ENTERTAINMENT MAIN POWER SWITCH & POWER TO PC PORTS. FLIGHT LANDED LHR WITHOUT INCIDENT. REPLACED COFFEE MAKER THAT HAD OVERHEATED. SYSTEM GND CHECKED NORMAL OPERATION CLOSED.