As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, AFTER 3.8 HOURS INTO FLIGHT, NR 1 GENERATOR CONTROL PANEL EMITS SMOKE. TURNED OFF NR 1 GENERATOR CONTROL PANEL AND REMOVED FROM RACK, RESUMED NORMAL OPERATION AFTER TWO MINUTES WITH OXYGEN MASK. AIRCRAFT LANDED WITHOUT INCIDENT, NR 1 GENERATOR CONRTOL PANEL TRANSFERRED TO DMI 01469 PER MEL 24-5.