As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWER SUPPLY PN 501-1712-02 SN 2065, WAS REMOVED FOR SCHEDULED DISCHARGE CHECK, UNIT FAILED DISCHARGE CHECK. BATTERY ASSEMBLIES (2 EA) PN 549-1324-06 WERE REPLACED AND UNIT PASSED ALL CMM CHECKS. UNIT WAS RETURNED TO SERVICE 5/13/04. FOR ADDITIONAL INFORMATION REFER TO WO#366903.