As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF #2 WEAK ON TRANSMIT, OK ON RECEIVE. GROUNDED - YES. REMOVED AND REPLACED REU PER B737-800 AMM 23-51-01/401. REU INSTALLATION TESTED OK. REMOVED AND REPLACED #2 HF TRANCEIVER PER AMM 23-11-21/401. LRU BITE TESTED OK. VERIFIED #2 HF TRANSMITTED AND RECEIVED NORMAL ON GND. REMOVED MEL 23-11A.