As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF RADIO #2 "FAIL" ANNUNCIATED ON RADIO TUNING PANEL. GROUNDED - YES. CONFIRMED FAULT, HF RADIO #2 SHOWS "FAIL" ON RADIO TUNING PANEL. CYCLED AIRCRAFT POWER. PERFORMED HF COMMUNICATION SYSTEM - OPERATIONAL TEST REF B737-900 AMM 23-11-00-710-801 AND HF COMMUNICATION TEST - SYSTEM TEST REF AMM 23-11-00-730-801, GROUND VERIFICATION TESTS GOOD ON HF RADIO #2. OK FOR CONTINUED SERVICE.