As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINTENANCE REQUESTED HF RADIO #1 & #2 CHECK. HF RADIO #1 WORKS; WILL TRANSMIT AND RECEIVE. HF RADIO #2 DOES NOT WORK; WILL NOT TRANSMIT OR RECEIVE. GROUNDED - YES. REPLACED #2 HF R/T PER B737-800 AMM 22-11-21-400-801. BITE TEST ON R/T FACE PASSED. RADIO CHECK WAS GOOD. R/T TUNES FROM LOW TO HIGH FREQS NO PROBLEM AUDIO GOOD.