As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF NR 1 PANEL 'FAIL' SHOWN ON BOTH FREQUENCY INDICATORS. SYSTEMS HANDBOOK NOTES POSSIBLE TRANSCEIVER FAILURE. NOTE BOTH HF RADIOS VOICE AND SELCAL CHECK GOOD. NA ACTUAL PROBLEMS NOTED DURING USE. GROUNDED - YES. RESET POWER TO HF SYSTEM. PERFORMED BITE PROCEDURE REF FIM 23-11 TASK 801 SYSTEM OPS NORMALLY. ETOPS GROUND VERIFICATION ACCOMPLISHED.