I need to repair cable. 'John' kindly answered K Beckett, saying there is a torx screw under the switch but how do I get the push button switch off to get to the torx screw?
Have a look at http://www.sparesaver.com/help-and-support/dyson-section/dyson-technical-advice-450/dyson-dc04-technical-advice-457/dyson-dc04-replacing-the-switch.html and see if that helps. Sparesaver should be able to help you if the pictures don't make sense!
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vacuum cleaners.