As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISPLAY FOR HF 2 "FAIL". WHEN FREQ IS SWAPPED, FAIL IS NO LONGER DISPLAYED. RADIO APPEARS TO FUNCTION NORMALLY. GROUNDED - YES. RESET SYSTEM BY CYCLING AIRCRAFT POWER, HF #2 "FAIL" ANNUNCIATION NO LONGER PRESENT. ETOPS GROUND VERIFICATION TEST GOOD IAW B737-800 AMM 23-11-00-710-801,