As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5794 - FLIGHT ATTENDANT REPORTED EMERGENCY FLASHLIGHT DID NOT ILLUMINATE AFTER TAKING IT OUT OF HOLDER. AFTER ABOUT 40 SECONDS IT STARTED SMOKING AND BECAME HOT TO THE TOUCH. CREW DEACTIVATED IT BY REMOVING THE BATTERY. LATER INVESTIGATION SHOWED THAT THE CONTROLLING CIRCUIT BOARD HAD SHORTED OUT.