What was found
AIRCRAFT DEPARTED, CREW NOTICED SMOKE AND FUMES IN THE CABIN AND COCKPIT. CREW ACCOMPLISHED EMERGENCY ACTION CHECKLIST, MANUALLY DEPLOYED OXYGEN MASKS AND PERFORMED AN EMERGENCY DECENT. THE PILOT IN COMMAND ELECTED TO DIVERT FLIGHT TO THE NEAREST AIRPORT FOR LANDING. A/C LANDED WITHOUT INCIDENT. REMOVED CABINET AND PANELS AND FOUND LIGHT TUBE (PN AL-1235-320), AT THE NR 2 RIGHT HAND WINDOW SHORTED AND MELTED. IN ADDITION THE ASSOCIATED LIGHTING ASSY WIRES, RECEPTACLE AND ADJACENT WALL PANEL WERE MELTED. PRELIMINARY INSP REVEALED THAT THE END CAP CONNECTOR OF THE LAMP ASSY HAD COME LOOSE. THIS CAUSED AN EXCESSIVE HEAT CONDITION. MAINTENANCE IS IN THE PROCESS OF CHECKING ALL ASSOC CONNECTORS AND POWER SU