As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CEILING POWER FWD C/B ON P18-3 PNL POPPED FOLLOWED BY AN ACRID ELECTRICAL SMELL IN THE FWD PART OF THE AIRCRAFT. PULLED AND COLLARED FWD CONT C/B AND FWD CEILING PWR C/B. PULLED C/P ON CEILING LIGHT AT RT ROW 24 AND LT 17. FOUND BURNED BALLAST, REPLACED BALLAST AND OPERATION NORMAL.