As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND THE CABIN EMERGENCY LIGHT AT FRAME 509.0 TO BE BURNED OUT. THE AIRCRAFT WAS REMOVED FROM SERVICE. CHANGED BULB DID NOT FIX. FOUND CONNECTOR LOOSE. MAINTENANCE RECONNECTED THE ELECTRICAL CONNECTOR. THE AIRCRAFT WAS RETURNED TO SERVICE.