As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEC DC ESS BUS SHEDECAM MSSG DSLAYED TSM TASK 24-60-00-810-810-A LOSS OF THE 28VDC SHED ESS BUS 801PP PERFORMED TSM 24-60-00-810-810-A. FOUND CB 1PH ( EMER/SHED/CONTOR/SPLY) OPEN. CLOSED CB AND WAIT 30 MIN, CB STAYS CLOSED. MSG CLEARED.TOMC RECOMMENDS REPLACING CONTACTOR 8PH AS PRECAUTION. REMOVED AND REPLACED DC SHED ESSENTIAL BUS CONTACTOR REF AMM 24-62-55/401. TEST OK. PARTS USED: 18-2434-3-0006,QTY :1