have a look at http://www.sparesaver.com/help-and-support/dyson-section/dyson-hints-and-tips-451/dyson-dc04-hints-and-tips-469/ - it sounds like it might be a motor problem. www.sparesaver.com should be able to help you!
Matthew
Matthew
June 2008
I can answer this question...
my dc 04 vacum cleaner makes horrible noise and burning smell?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vacuum cleaners.