As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BUF FLIGHT 2167, THE CREW REPORTED A STRONG ELECTRICAL BURNING ODOR NEAR THE GALLEY AND ALONG ROW 3 SEAT B&C. MAINTENANCE FOUND THE ELECTRICAL ODOR COMING FROM THE PSU AT ROW 3 B&C. THE CIRCUIT BOARD WAS REMOVED AND THE AIRCRAFT WAS RELEASED IAW MEL 25-60-02/4 AND 25-60-02/11. ON 6/25/04 THE CIRCUIT BOARD WAS REPLACED AND THE OPERATIONAL CHECKS WERE GOOD.