As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 2 HRS AFTER DEPARTURE NOTICEABLE ELECTRICAL TYPE ODOR COMING FROM SEAT 17A AND B. ELECTRICAL BOX UNDER SEAT 17A QUITE WARM. READING LIGHTS IN COACH WOULD NOT TURN OFF WITH MASTER SWITCH. PULLED CB'S. FLIGHT DIVERTED TO DLH AND LANDED WITHOUT INCIDENT. REPLACED DEMULTIPLEXER/ENCODERAT 17A AND B. OPERATION CHECKS GOOD.