As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXPERIENCED SMOKE IN THE CABIN. COMPLIED WITH QRH & DIVERTED. FOUND NR 2 HEATER POPPING BREAKER ON P70 PANEL. DURING REMOVAL OF HEATER IT WAS INOPERATIVE WITH BURNT DEBRIS INSIDE OF IT. REPLACED NR 2 DOOR HEATER. RAN ENG & PACKS TO CONFIRM SMOKE NO LONGER PRESENT.