As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW PERFORMED AN AIR TURN BACK FOLLOWING DUE TO THE LOSS OF BOTH THE LT & RT HF RECEIVERS. SELCAL CHECK ALSO FAILED. CORRECTIVE ACTION: MAINTENANCE REPLACED BOTH THE LT & RT HF TRANSCEIVERS. IT WAS NOTED THAT BOTH HF SENSE CONTROLS WERE TURNED DOWN. TURNED CONTROLS UP AND THE OPERATIONAL CHECKS WERE GOOD.