As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO GATE WITH ELECTRICAL PROBLEMS. FOUND BUS PROTECTION PANEL CIRCUIT BREAKER POPPED AND ELECTRICAL SMELL IN E & E COMPARTMENT. *S/D* REPLACED FAILED NR 3 GENERATOR BREAKER. ALSO, REPLACED BUS PROTECTION PANEL AND GENERATOR CONTROL UNITS PRECAUTIONARY. NO FURTHER PROBLEMS REPORTED.