As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS GROUNDED. FLIGHT ATTENDANTS REPORTED STRONG ELECTRICAL BURNING SMELL AT APPROXIMATELY ROW 7. SMELL REPORTED COINCIDENT WITH A/P. FOUND AIRCRAFT NOSE UP BRAKE CONTROL RELAY OVERHEATED. REPLACED RELAY R20-18. OPERATIONS CHECK OK PER AMM 27-40-03.