As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL BURNING SMELL NOTICED IN COCKPIT, SOURCE UNKNOWN. SHUTOFF RECIRC FANS AND SMELL DISSIPATED. UPON INSPECTION CABIN, SMELL WAS VERY STRONG BETWEEN ROWS 30-34 ON RT SIDE. PULLED MUX C/B'S AND SMELL CONTINUED. FURTHER INVESTIGATION DISCOVERED HEAVY SMELL AT OVERHEAD LIGHT PANEL ABOVE SEAT 34K. FOUND OVERHEAD DECODER BURNT AT SEAT 34HJK. REMOVED AND REPLACED DECODER. OP CKED GOOD, RESET ALL CB'S, NO SMELL/SMOKE NOTED.