As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF RADIOS WOULD NOT TRANSMIT. RESET CB HF1 HF2 STILL INOPERATIVE. REMOVED AND REPLACED LEFT AND RIGHT HF COUPLERS IAW AMM 23-11-61 -400-801 UPTO STEP H.12, INSTALLATION TESTED IAW 23-11-61-400-801. HF1 AND HF2 SYSTEMS OPS CHECKED NORMAL.