As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT PERFORMED A PRECAUTIONARY LANDING FOR A BURNING SMELL IN THE CABIN. DURING INSPECTION OF THE ACFT THE MECHANIC FOUND A RELAY WITH SIGNS OF HIGH HEAT. MECHANIC REPLACED RELAY PN 389FXAXC1-24D. FUNCTION CHECK OK WITH NO FURTHER SMELL