As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A BURNING SMELL IN THE CABIN AFTER TURNING ON INSTRUMENT LIGHTS. MAINTENANCE INSPECTED AND FOUND CO PILOT DIMMING CONTROLLER RESISTOR R1 AND HEAT SINK TRANSISTOR ASSY #7 TRANSISTOR BURNT. REMOVED AND REPLACED RESISTOR AND HEAT SINK ASSY WITH NO ADDITIONAL DEFECTS NOTED.