Hi, A power failure of a Beosound 9000 is my worst nigthmare about this unit I pretend to know a little bit though. For anyone to help you better, what mark is the 9000: some do have a power switch and it may be the easier place to start. PS: to your other enquirie about the french branch, Yes it do exist but the main action is there in the internationals threads. Nowadays with the integrated traduction tolls it should be easier for anyone to follow. Tell this to your french mate. By the way, I've pushed a lot of french people to this forum about the Beolab 8000 clamps to make wooden frets. Maybe your friend is one of them?