As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF2 SHOWING FAIL ON BOTH FREQUENCY INDICATORS. GROUNDED - YES. ACCOMPD B737-800 FIM 23-12 TASK 815, FAIL MSG EXSTINGUISHED REPLACED BY SELECTED FREQUENCIES IN RTP FREQ WINDOWS. VHF COMM TEST REF B737-800 AMM 23-12-02 AND HF COMM TEST REF AMM 23-11-00. OPS NRML. RMVD AND RPLCD #2 HF R/T REF AMM 23-11-21, OPS NRML. ETOPS SIGNIFICANT SYST-GND VERIFICATION SUCCESSFUL.