As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HF RADIO INOPERATIVE. LEFT HF TEST PASSED MAT TEST, LEFT HF CAN MONITOR BUT WILL NOT TRANSMIT IN BOTH CAPT-FO POS. COUPLER WILL NOT TUNE FOR TRANSMIT. RDF-T :TRIED NEW LEFT HF TRANSCEIVER STILL NOT TUNING. REINSTALLED OLD ONE. OPS CHECKED RIGHT HF PER AMM. CHECKED GOOD.