As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED EXPERENCING " TRANSPONDER AND COMMUNICATIONS EQUIPMENT NOT WORKING PROPERLY, THEN A HOST OF ELECTRICAL FAILURES, WITH A ODOR OF SMOKE." FOUND NR 2 COMM HAD FAILED. REPLACED NR 2 COMM. GROUND CHECK FOUND ALL OTHER SYSTEMS.