As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH THE EXTERNAL POWER HOOKED UP, SMOKE ENTERED THE FLIGHT DECK AND THE PASSENGERS WERE DEPLANED. MAINTENANCE INSPECTED AND REPLACED BOTH FUSES IN THE GROUND POWER SYSTEM IN ACCORDANCE WITH DORNIER MAINTENANCE MANAUL 24-00-00, BUT GROUND POWER WAS STILL INOP. MAINTENANCE THEN DEFERRED THE GROUND POWER SYSTEM , 24-24 CODE C.