As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED MAINTENANCE, CREW NOTED SEVERAL CABIN LIGHTS WENT INOPERATIVE. WIRE PX601A8 AT CONNECTOR 394A1J1/369A1P1 BEHIND AUX CB PANEL AT RT RADIO RACK WAS FOUND WITH EVIDENCE OF OVERHEATING AND ARCING. SOLDERED CONNECTION TO CORRESPONDING PIN HAD FAILED. CB DID NOT TRIP. REPLACED CONNECTOR, TRIMMED DAMAGED WIRE, INSTALLED NEW PIN. REPLACED 50 AMP CB. INTERNALLY INSPECTED POWER DISTRIBUTION BOX FOR EVIDENCE OF OVERHEATING. TESTED REPAIRED CIRCUIT. (K)