As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEN-B OFF LIGHT CAME ON, AC LOAD ZERO ALT WITH AC BUS TIE 3 ISON LIGHT AND RT EMER PWR. NO CODE TO COVER PROBLEM. FOUND MOISTURE ON DC POWER CENTER IN CACC. REMOVED MOISTURE AND RAN ALL 3 ENGINES IAW DC-10 ENGINE RUN HANDBOOK. NO FAULTS NOTED ON ELECTRICAL SYS TEST.