As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FDM 5142 JFK-BTV (1620 PHX LCL). PA/CHIME/CALL LIGHTS FLASH ON/OFF IN FLIGHT BY THEMSELVES, SEAT BELT CHIME IS INOP, PASSENGERS CAN HEAR THE RADIO TRANSMISSIONS IN THE CABIN & ELECTRICAL BURNING SMELL IN CABIN & FLIGHT DECK. MX REMOVED AND REPLACED AMP.