As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - SMOKE - VERY STRONG SMELL OF ELECTRICAL BURNING WIRE SMELL NEAR AFT LAVATORY, NO SMOKE NOTED. MAINTENANCE REPLACED BALLAST ON ROWS 18-22R AND WINDOW LIGHTS. ALSO INSPECTED ELECTRICAL WIRING ON ROWS 18-22R NOTHING SHOWED ANY SIGNS OF SPARK OR SHORT PER AMM 33-21-00.