Hello, my powermac g4 digital audio 733mhz smells like burnt plastic(or what appears to be toxic fumes) whenever its powered on. Everything works fine when using it, except the smell. I'Ve since stopped using it, since it really is hard for the nose and head. I was wondering what are the causes for that smell. If no solution is found, it might possibly be taken back for recycling or whatever they do with old computers at the university.