What was found
WHEN POWERING UP NOTICED SMOKE WAS COMING FROM THE AVIONICS DEPT, SHUT DOWN A/C. CHECKED OUT THE AREA, THE SMOKE WAS GONE. POWERED UP THE A/C AGAIN ECAM SHOWED T/R UNIT 2 INOP. INSPECTED THE AREA AGAIN, FOUND NO EVIDENCE OF SMOKE OR DAMAGE WIRING. REMOVED AND REPLACED NR 1, NR 2 T/R AND ESS TRU PER M/M 24-32-11-4 OPS CK GOOD. OFF MFG F11QY3714 POS TR2, SRL 1863R, TAG 2B2564, ON MFG F11QY3714, SRL 2.299R, TAG 53A793 R/I OFF MFG F11QY3714 POS TR1, SRL 8062-091, TAG 03A666, ON MFG F11QY3714 SRL 1074, TAG 148A13R/I 29MAY07 15:32. R/I OFF MFG F11QY3714, POS ETR SRL 8004-160, TAG 47887A, ON MFG F11QY3714 SRL 1.970R, TAG B86825.