As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF#2 CONTINOUSLY DISPLAYS "FAIL' IN BOTH FREQUENCY DISPLAYS. GROUNDED - YES. PERFORMED HF2 CIRCUIT BREAKER RESET PROCEDURE REF B737-800 AMM 20-60-05. PERFORMED HF COMMUNICATIONS SYSTEM BITE REF FIM 23-11- TASK 801 AND PERFORMED HF FAULT ISOLATION REF FIM 23-11 TASK 806 ALL CHECKS GOOD ETOPS GROUND VERIFICATION SUCCESSFUL.