As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: SELECTED APPROACH MODE FOR THE ILS 25L AT LAX. LOC STARTED TO CAPTURE WHEN WE LOST BOTH FLIGHT DIRECTORS AND AUTO THROTTLES.AS WELL AT AUTO PILOT.COMMAND A SELECTED. TRIED THE APPROACH AGAIN WITH THE SAME RESULT.DIVERTED TO ONT FOR A VFR APPROACH, TRIED TO SELECT APPROACH MODE AGAIN, SAME RESULT. REMOVED AND REPLACED RCV ANTENNAS IAW AMM 34-33-11.