As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED NO BATTERY VOLTAGE INDICATION ON VOLTMETER WITH ALL DC BUSSES POWERED. TROUBLESHOOTING FOUND AIRCRAFT WOULD NOT GO INTO EMERGENCY POWER OR PERFORMED FEEDER FAULT TEST. FOUND 5A MICROFUSE F105 CONNECTED TO K005 EMERGENCY BUSS POWER RELAY OPEN. REPLACED F105 FUSE, ALL DC POWER FUNCTIONS NORMAL, NO FAULTS NOTED. (K)