As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU BATTERY CHARGER EICAS MSG DISPLAYED. REMOVED AND REPLACED APU BATTERY CHARGER IAW AMM 24-31-05 NO FIX. REMAINS OPEN. PERFORMED TROUBLE SHOOTING FIM 24-31 FT 805. R&R BATERY CHARGER PN OFF 4-254-05 S/N OFF 0324. T/S REF FIM 24-31 FT 806, FOUND C/B P6A1 (BAT-BUS-DIST) POP OUT. RESET C/B CLEARED STATUS MSG.