As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2094, OVERHEAD LIGHTING C/B POPPED. FLIGHT ATTENDANT REPORTED SMELLING ELECTRICAL BURNING SMELL COMING FROM CLOSET AT APPROXIMETLY THE SAME TIME AS THE CIRCUIT BREAKER POPPED. MAINTENANCE REPLACED POWER SUPPLY 3314P3 (LOCATED IN CLOSET). OPERATION CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.