As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL 1 EMERGENCY PWR ON IN FLIGHT, COMPLIED WITH QRH, ALERT REMAINED ON. DEPLOYED ADG PER QRH WITH MOCC CONCURRENCE CHECKED ASSOCIATED WIRING FROM OVERHEAD ELECTRICAL PANEL TO EPCU AND FROM R2-17 TO R2-5411. NO DEFECTS NOTED. REPLACED R2-17 AND R2-5411. PERFORMED EMERGENCY POWER TEST. ALL TEST PASSED.