As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO DEPARTURE DUE TO UNCONTROLLABLE PA CHIMES & A ELECRICAL SMOKE ODOR IN THE GALLEY. THE CHIMES WERE ADDRESSED BY REPLACING THE AFT F/A HANDSET THAT WAS STUCK IN THE "CALL" POSITION. THE SOURCE OF THE ODOR WAS A SIGN OVER THE R-1 DOOR. THE SIGN HAD A BROKEN TERMINAL AND THERE WAS EVIDENCE OF ARCING ON THE SIDEWALL. THE TERMINAL AND LIGHT ASSEMBLY WERE REPLACED.