What was found
SMOKE ODOR IN CABIN, NOT VISIBLE, ODOR REPORTED FIRST IN AFT CABIN, RESULTING IN A DIVERSION. RAN COFFEEMAKERS, OVENS AND INSPECTED GALLEY AREAS, NO DEFECTS FOUND. CIRCUIT BREAKER PANELS COOL TO TOUCH, NOTED RESIDUAL SMOKE ODOR NEAR SEATS 34ABC & PCU'S AT THESE SEATS ARE INOPERATIVE, PES MUSIC WILL NOT TEST PER AMM, SUSPECT SEB AT 34ABC, DEFERRED PAX AUDIO SYS PER MEL 2522AE, NO OTHER DEFECTS NOTED. REPLACED SEB MR23462 AT SEAT 34ABC AFTER SEAT PCU'S WORKED BUT NO AUDIO, REPLACED MAIN MULTIPLEXER PER AMM. ALL AUDIO OP CHECKED GOOD.