As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT HF NR 2 FAIL LIGHT ILLUMINATED IN BOTH WINDOWS. CONFIRMED FAULT HF2 "FAIL" MESSAGE IN ACTIVE AND STANDBY ON BOTH CAPT'S AND F/O'S RADIO FREQ WINDOWS RESET AIRCRAFT POWER FAULT DID NOT REOCCUR PERFORMED FIM TASK 23 11 00 810 801 FOUND TO BE AN INTERMITTENT FAULT NO HISTORY PAST 30 DAYS.