As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS REPORT IS THE 3RD OCCURRENCE OF SMOKE/ODOR CAUSED BY AN ELECTRICAL DISCHARGE FAULT IN THE OVERHEAD CIRCUIT BREAKER PANEL. MECHANICS REPLACED THE APPROPRIATE WIRING AND DUMMY CIRCUIT BREAKER INVOLVED IN THE INITIAL FAULT. AIRCRAFT WAS OPS CHECKED AND THEN RETURNED TO IT'S BASE.