Technical question, out at an old friend who has a full bang and olufsen all was working till he had a power outage which was later traced to a faulty cable between two points which was resolved, however since that has happened there is no sources available round the house. I unplugged everything  reset the main system and powered everything  back on. He has a ml distribution box which has cable from band 9000 to ml distribution  box then one cable from bsysten3 to ml distribution box cd and radio work fine in the main room, however as soon as Iplugged in the cable which connects from ml distribution box to the rest of the house it wont work disconnect and it works in thr main room, nothing has changed is it possible the junction box on that cable that goes to the rest of the house has a short, any thought appreciated