As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- FLIGHT 2525 - DETECTED A FAINT HOT ELECTRICAL WIRING/INSULATION ODOR IN THE PAX CABIN AT ROW 1. INSPECTED AND FOUND OVERHEAD LIGHT BALLAST FOR FORWARD LEFT LIGHT PS 45 HOT. NO FIRE DETECTED. REMOVED AND REPLACED BALLAST IAW TASK 33-21-03 OPS CK GOOD. AIRCRAFT RETURNED TO SERVICE.