As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF1 ABLE TO RECEIVE SELCAL AND VOICE BUT APPEARS UNABLE TO TRANSMIT. WE DID HEAR TONE WHEN TUNING, HF 2 WORKS FINE,. GROUNDED - YES. REMOVED & REPLACED #1 HF TRANSCEIVER B737-800 AMM 23-11-21 PULLED & RESET 1 ASSOCIATED C.B. OPS CHECK NORMAL.