As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) MAINTENANCE INVESTIGATION OF A "BURNT" SMELL IN THE CABIN DURING MAINTENANCE REVEALED AN OVERHEATED BALLAST FOR THE CABIN OVERHEAD FLUORESCENT LIGHTS. THE BALLAST AND LIGHTS ASSEMBLIES WERE REPLACED AND THE AIRCRAFT RETURNED TO SERVICE. TTAF 24743, TCAF 33783 CYCLES