Daniel possibly unknowingly made his _very on topic_ -question in an OT thread so I have made a correct new thread here so that you, that may have the answer for him, doesn't miss it. Daniel wrote: > Hi List, after an hour or so of playing music through the speakers > of my PB 550 I start to get 'noise'. something like an electric hum > or buzz. Same with external speakers. What can be the reason for > that? Is it repairable at all? ------------ I answered somebody else on a similar question in december 2004: "Perhaps you could check the archive. <http:// listserver.themacintoshguy.com/mailman/listinfo/titanium> I remember the subject "noise from the speakers" where somebody declared it wasn't noice from the speaker. Another subject was about "whining noice". Perhaps you could simply search on "noice", since there are probably more diskussions on the subject then what I remember. :-)" So if you don't get an immediate answer from somebody on the list right now I suggest you search the archives earlier than december 2004. I believe the archive is now ziped month by month. That should make them possible to download, open in a map by themself and have Spotlight in OS10,4 do the search for you. Lisbeth in Gothenburg <http://homepage.mac.com/holisticum/> updat 050215 <http://www.got-a-mac.org> medlemssida för Got-a-Mac (Mug in Gothenburg)