As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
READING LIGHTS AT 28AB WOULD NOT TURN OFF, SMOKE EMITTED FROM PASSENGER SERVICE UNIT PANEL. POWER TURNED OFF FROM CACP. *S/D* BOTH LAMPS WERE REMOVED AND REPLACED. AREA WAS INSPECTED FOR SIGNS OF OVERHEAT OR BURNING, NONE FOUND. ALL OPERATIONS RETURNED TO NORMAL AFTER LAMP REPLACEMENT. THERE HAVE BEEN NO REOCCURRENCES OF THIS ANOMALY.