What was found
(CAN) FLIGHT CREW ADVISED FLIGHT DISPATCH VIA ACARS MSG OF A TOTAL COMM FAILURE. THEY WERE BROADCASTING BLIND, AND SQUAWKING 7600. BECAUSE ACARS CONTINUED TO WORK, FLIGHT DISPATCH COORDINATED WITH THE APPROPRIATE ATC FACILITIES TO FACILITATE CONTINUING TO DESTINATION. IN CONJUNCTION WITH MAINTENANCE, THEY WERE ABLE TO RESTORE LIMITED COMMS WITH ONLY THE CAPTAIN`S SIDE WORKING ON THE BACKUP RADIO, F/O REMAINED NORDO. FLIGHT CREW WILL FILE ASR. COMM 1+2 CHECKED SERVICEABLE ON GROUND, FIMM INDICATED IN TRANSITORY CONDITION, MRC 1 NIC AND MRC 2 NIC BITE TESTED SERVICEABLE IAW AMM45-45-00-970-805 AND FIM 23-12-00-810-053-A.