As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF1 STOPPED TRANSMITTING. GOOD SELCAL CHECK AND ABLE TO HEAR LONG TONE WHEN INITIALIZING. GROUNDED - YES. RERACKED HF1 TRANSCEIVER AND BITE CHECK TEST PASSED. B737-800 FIM 23-11 TASK 801. HF1 COMMUNICATION SYSTEM TEST PERFORMED PER B737-800 AMM 23-11-00-730-801 RESULT GOOD. ABLE TO TRANSMIT AND RECEIVE COMMUNICATION.