As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 1.5 HOURS OUT OF SFO, FLIGHT ATTENDANT REPORTED BURNING ODOR FROM REAR LAV AREA. ODOR CONFIRMED BY FLIGHT CREW AND AIRCRAFT RETURNED TO SFO AND LANDED WITHOUT INCIDENT. FOUND E-ZONE PROJECTOR MELTED INSIDE. REPLACED THE PROJECTOR. OPERATIONAL CHECK NORMAL.