As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED ENTERTAINMENT TAPE RECORDER SMOKING EN ROUTE TO DEN. DIVERTED TO SLC AND LANDED WITHOUT INCIDENT. ISOLATED ELECTRICAL SHORT IN TAPE PLAYER. PULLED AND COLLARED CIRCUIT BREAKER E7 ON P6-1 PANEL. REMOVED TAPE PLAYER FROM WALL ABOVE FWD FLIGHT ATTENDANT SEAT AND SECURED CANNON PLUG TO WALL WITH TAPE. DEACTIVATED AND REMOVED TAPE REPRODUCER PER EA 23-737-021.