As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO TRANSMIT OR RECEIVE ON EITHER HF RADIO. BOTH HF RECEIVE AND TUNE BUT DO NOT TRANSMIT AND HAVE NO SIDE TONE. POSSIBLE AUDIO PROBLEM. COMPLIED WITH MEL. LEFT AND RT HF INOP. COMPLIED WITH MEL. CHANGED CONTROL PANEL AND RIGHT TRANSCEIVER, ONLY RECEIVES. NO HELP, SWAPPED BACK.