As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STANDBY POWER OPERATIONAL CHECK FAILS IN AUTO. WITH INV PWR TRU D11 CB OPEN, STBY BUS OFF LIGHT REMAINS ON AND EICAS MESSAGE STANDBY PWR BUS OFF LIGHT SHOWS ON UPPER DISPLAY. REF 'A' CHECK JOB 6-2005-B PAGE 3 ITEM 4. BY- 115803 :CONFIRMED THAT RELAY K113 IN THE P6-1 PANEL IS BAD BY SLAVING IN ANOTHER RELAY. FOUND RELAY K105 AC STBY PWR BAD IN P6 PANEL REF SSM24-33-01-101. REPLACED RELAY, OPS NORMAL.