As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED WITH THE APU GENERATOR ON, STARTED RIGHT ENGINE, THE STARTED LEFT ENGINE AND SECONDS LATER RECEIVED AN AMBER "J-BOX CURRENT LIMITER" WARNING. ALSO THIS TRIPPED THE HT012 CIRCUIT BREAKER. THIS FAULT RESULTED IN THE FLIGHT BEING CANCELED. THE MAINTENANCE VENDOR DETERMINED THAT THE CURRENT LIMITER (HZ114) HAD TRIPPED. THE CURRENT LIMITER WAS REMOVED AND REPLACED WITH A NEW UNIT. OPERATIONS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.