As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT, SMOKE FILLED FLIGHT DECK. AIRCRAFT RETURNED TO SIN AND LANDED WITHOUT INCIDENT. SIN MAINTENANCE FOUND FE PANEL LIGHT CB POPPED. FE DIMMER WAS BURNED. MEL'D COCKPIT LIGHTS, AND COLLARED BREAKER AND WILL REPLACE DIMMER IN NRT. NRT MAINTENANCE 17MAY05 REMOVED AND REPLACED FFE DIMMER. MEL REMOVED OPERATION CHECKS NORMAL. REF LOG 2357883 AND 2357686.