As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1466 - PHL - EEL - OVERHEAD READING LIGHT 17F WOULD NOT TURN OFF. AREA AROUND IT WAS EXTREMELY HOT AND FLIGHT ATTENDANT REPORTED THERE APPEARED TO BE SMOKE. LIGHT TURNED OFF AND COOLED DOWN. MAINTENANCE REMOVED AND REPLACED THE POWER SUPPLY.