As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED SMOKE FROM ABOVE EICAS APPEARED TO COME FROM FLOOD LIGHT OVER EICAS. SMOKE STOPPED WHEN THE FLOOD LIGHT WAS TURNED OFF. MAINTENANCE INSPECTED AND REPLACED THE FLOOD LIGHT ABOVE EICAS AND REPLACED POWER INVERTER. OPERATIONAL CHECKS WERE GOOD. FLOOD LIGHT P/N 10-123C