As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 1 HF NOT TRANSMITTING. GROUNDED - YES. PERFORMED HF NR 1 BITE PROCEDURE. HF NR 1 BITE PROCEDURE PASSED. PERFORMED NR 1 HF ANTENNA COUPLER INSTALLATION TEST PER B737-800 AMM 23-11-61, SUBTASK 23-11-61-720-001. INSTALLATION TEST OF THE NR 1 HF SYSTEM AND ANTENNA COUPLER GOOD AT THIS TIME. NR 1 HF SYSTEM SUCCESSFULLY STABILIZES AND MAINTAINS 2-WAY RADIO HF COMMUNICATION.