As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT FILLED WITH ELECTRICAL SMOKE IN FLIGHT DECLARED EMERGENCY AND LANDED LGA. INSP'D COAT CLOSET RELAYS, ALSO AVIONICS COMP. INVERTERS, BEHIND INST PANEL, GROUND RAN BOTH ENG'S OPERATED SYSTEMS, ACCOMPLISHED AVIONICS SELF TEST OF ADC. RAN BOTH ENGINES FOR 30 MINUTES, FOUND DSPLY COOLING FAN IS SEIZED UP. NO DAMAGE FOUND IN IMMEDIATE AREA MEL COOLING FAN.