As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN HF2 IS SELECTED ON RADIO TUNING PANEL "FAIL" IS SHOWN IN BOTH FREQUENCY WINDOWS. GROUNDED - YES. CW B737-900 FIM 23-11 TASK 802 BITE PROCEDURE REVEALED NO FAULTS ON RADIO TUNE PANEL. INTERMITTENT FAULT OK FOR SERVICE. CW GROUND VERIFICATION OPS NORMAL.