As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 125 - JFK-DEN - EN ROUTE, IN FLIGHT CREW MEMBERS COMPLAINED OF BURNING ELECTRICAL SMELL FROM LAV E. TRIED TO ISOLATE SMELL BY REMOVING INCANDESCENT LIGHT BULB, WHICH WAS CONSTANTLY ON AND HOT. IT SHOULD TURN OFF WHEN DOOR IS OPEN AND UNLOCKED. LAV SYSTEMS UNOCCUPPIABLE. ACCOMPLISHED TSM TASK 24-00-00-810-823 FOR ELECTRICAL BURNING SMELL IN CABIN. FOUND LAV E WATER HEATER BURNT AND LEAKING. REMOVED AND REPLACED LAV E WATER HEATER IAW A320 AMM 38-12-16-04, OPS CHECK OK, LEAK CHECKS OK.