As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF #1 RADIO FAILED HF #2 OPS NORMAL. GROUNDED - YES. CONTROL PANEL SHOWS FAIL MSG FOR #1 HF. PERFORMED B737-800 FIM 23-11 TASK 801 AND BITE CK PASSED. FAIL MSG EXTINGUISHED, PERFORMED OPERATIONAL CK OF BOTH #1 AND #2 HF SYSTEMS AND OPS TEST PASSED GROUND FUNCTIONAL TEST OF #1 AND #2 HF SYSTEMS PASSED.