As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACFT ARRIVED FROM CUSTOMER WITH EXTERNAL POWER INOP (MEL). AFTER INVESTIGATION, FOUND THE + TERMINAL MELTED AT THEN EXT PWR CONNECTOR. SHEET METAL REPAIR WAS PREVIOUSLY DONE AT THE EXT PWR CONNECTOR ATTACHMENT. BOTH TERMINALS WERE CRACKED HALF WAY.