As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED LOW VOLTAGE ON NR 2 BATTERY SYSTEM CHECKED AND IT WAS FOUND THE VOLT METER IN OVERHEAD ELECTRICAL PANEL WAS AT FAULT. WE COULD NOT REPLACE JUST THE METER SO A PANEL WAS ORDERED AND REPLACED. THE OLD PANEL WHEN REMOVED WAS FOUND TO HAVE SOME BURNT MARKS ON IT BUT NO INDICATION OF FIRE OR HOT SPOTS AROUND THE AREA. THE CREWS HAD NOT REPORTED SMELLING SMOKE IN THE COCKPIT.