As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 9501 -ATB/FUME- THE FLIGHT CREW RETURNED THE AIRCRAFT TO ATL DUE TO AN ACRID BURNING SMELL IN THE CABIN. CORRECTIVE ACTION: MAINTENANCE REPAIRED DAMAGED WIRES AND RING TERMINALS AT THE SERVICE DOOR OVERHEAD LIGHT ASSEMBLY. AIRCRAFT RETURNED TO SERVICE. (LP #6556652)