As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING B INSPECTION FOUND THE FORWARD AVIONICS BAY EMERGENCY BATTERY POWER SUPPLY UNIT FAILED THE OPERATIONAL CHECK. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE EMERGENCY BATTERY AND BATTERY CHARGER SUPPLY UNIT IAW WC 33-002. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.