As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 HF WILL NOT TUNE AND UNABLE TO RECEIVE. GROUNDED YES. NR 1 HF TRANSCEIVER WILL NOT BITE TEST PER TASK 23 11 00 810 801 NO LED'S COME ON WHEN TEST SWITCH IS PUSHED. REPLACED NR 1 HF TRANSCEIVER IAW M/M 23 11 21 000 801 & 23 11 21 400 801. PERFORMED BITE TEST PER TASK 23 11 00 810 801. NO DEFECTS NOTED.