As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW REPORTED, DURING FLIGHT, EXCESSIVE HEAT GENERATED BY BOTH FWD LAVATORY CEILLING LIGHTS FLUORESCENT AND INCADESCENT BULB VERY HOT, WHEN MASTER LAVATORY SWITCHON, BOTH LIGHTS ON FULL BRIGHT IN BOTH LAVATORIES, SMELL OF BURNED RUBBER VERY PRESENT. FOUND BOTH LAVATORY CEILLING LIGHTS TRANSFORMERS BURNED. DEACTIVATED CONNECTOR PLUG OFF AND C/B FWD LAVATORY LIGHT PULLED ON CB 2. THE TRANSFORMERS WERE REPLACED.