As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING FLIGHT THERE WAS A STRONG BURNING SMELL FROM ROWS 6, 7, 8. MAINTENANCE FOUND THE SIDEWALL LIGHTING BALLAST AT ROW 7 TO BE BURNT. MAINTENANCE REPLACED THE ROW 7 LIGHTING BALLAST AND THE PASSENGER SERVICE UNIT. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.