As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL ODORS (SMOKE) COMES AND GOES. *S/D* WIRE L639-20 WAS FOUND TO BE BINDING ON THE THROTTLE SEAL PLATE. THIS RESULTED IN A SHORT CIRCUIT. THE CONTROL STAND DIMMER UNIT CIRCUIT BREAKER WOULD NOT RESET. THE BURNED WIRE WAS REPLACED. ALSO, THE CONTROL STAND LIGHT DIMMER UNIT WAS REPLACED.