As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE DE-ICING WITH ENGINES IN START FEATHER AND BLEEDS OFF, SMOKE ODOR OBSERVED COMING FROM AVIONICS RACK BEHIND CAPTAIN'S SEAT. FOUND CIRCUIT BREAKER FOR AUX INVERTER G9 AND AUX INVERTER D8 POPPED. R & R AUX INVERTER IAW MM 24-22-00. OPS CHECKED GOOD.