As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO EFB POWER CORD AT MAGNETIC PLUG HAD ELECTRICAL SPARKS AND ARCING IN FLIGHT. DISCONNECTED POWER CORD FROM EFB. DO NOT RECONNECT THE OLD CORD. F/O EFB POWER CORD REMOVED AND REPLACED AS PER AMM 46-11-96-4, TEST OK. A/C OK FOR SERVICE.