As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STANDBY BUS EICAS MESSAGE IN FLT. STBY POWER OFF LIGHT ILLUM, DID NOT EXTINGUISH WHEN BATTERY SELECTED MESSAGES INCLUDE L YAW DAMPER, L BLD ISLN VLV UTL BUSSES, L/E SLAT DISAGREE, PROBE HEAT AND AILERON LOCK OUT. REPLACED INTERMITTENT C/B, OPS NOW NORMAL.