What was found
COMPLETE LOSS OF COMM ON VHF 1, 2 & 3 AT 1:15 INTO 2 HR FLIGHT. WE CHECKED QRH, NO HELP. CHECK 02 MASK DOORS & RESET. UNPLUGGED & PLUGGED IN AUXILIARY HEADSETS. TRIED COMM WITH CTR USING MASKS, AUXILIARY, NO HELP. RESET VHF 1, 2 & 3 BREAKERS & AFTER 12 - 15 MIN OF LOST COMM WE REGAINED INTERMITTENT USE OF COMM 1 & 2. COMM 1 ON CAPTAIN SIDE IS WEAK, LOW VOLUME, LOT OF STATIC ON OVERHEAD. R & R 1 RN AUDIO INTEGRATION UNIT, OPERATIONS CHECKED OK A310MM 23-51-18-04.