As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED WHEN PANEL LIGHTING AND OVERHEAD LIGHTING IS ON, THERE IS AN ELECTRICAL BURNING SMELL. MAINTENANCE INSPECTED AND FOUND THE OVERHEAD FLOOD LIGHT DIMMER ASSEMBLY RIGHT RHEOSTAT RESISTER BURNT. THE ASSEMBLY WAS REPLACED WITH NO FURTHER DEFECTS.