As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT, THE READING LIGHTS IN COACH CABIN AB STARTED FLICKERING AND A BURNING ODOR FOLLOWED. THE ROTARY SWITCH ON F/A PANEL DID NOT KILL THE POWER. MX UNLATCHED PASS SERVE POWER SWITCH ON THE L1 DOOR OF THE F/A PANEL WHICH KILLED THE POWER TO THE AFFECTED LIGHT AND THE ODOR DISSIPATED. MX THEN RAN CABIN LIGHTS FOR 2 HOURS AFTER RESETTING THE CIRCUIT BREAKER. SYS OPS IS NORMAL.