What was found
DC BUSS 2 CAUTION MESSAGE. SMELLED A BURNING ODOR FOR ABOUT A MINUTE BEFORE GOING AWAY. MULTIPLE ASSOCIATED FAILURES INCLUDING CAUTION MESSAGES AS WELL AS MANY STATUS MESSAGES. MEL 24-31-1CAT B. SMOD APPROVEL REQUIRED FOR RTS DUE TO ODI EVENT (FLIGHT 4684) UPON ARRIVAL , POWERED ACFT UP & TROUBLESHOT DC BUSS 2 CAUTION PER FIM 24-31-00. ALL MESSAGES CLEARED EXCEPT FOR THE TRU 2 FAIL STATUS REMAINED ILLUMINATED THEREFORE DEFERRED TRU 2 IAW MEL 24-31-1. MX ACTIONS COMPLIED WITH , PLACARDS PLACED . INSPECTED AVIONICS BAY FOR ANY SIGN OF DAMAGE , FOUND NO DAMAGE PRESENT.