As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THERE WAS AN ELECTRICAL BURNING SMELL DURING CLIMB FOR APPROXIMATELY 3 MINUTES. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT AT ITS INTENDED DESTINATION. MX TIGHTENED A LOOSE CONNECTOR ON THE LT DC BUSS TO THE CENTRAL DC BUSS. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.