As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL CLATTER IN CB PANEL BEHIND F/O TWO FUEL BREAKERS OPENED. BROKEN TERMINAL LUG ON TERMINAL L1 OF LEFT BUS TIE BREAKER, C902, REPLACED. RESTORED ACFT POWER. VERIFIED MAIN AND STANDBY POWER PARAMETERS OK. NO CLATTERING, OR CHATTERING, IN P6 CB PANEL.