No suction or very little but no blockages in any of pipes?

@deborahmills the Dyson has multiple filters on the suction head etc. I would suggest a teardown and a good cleaning (or even replacing some of those) Since iFixit does not yet have a specific guide for this, use something like this video in combination with this one

Dyson's are a bit of a PITA to work on due to that whole cyclone system but it is definitely worthwhile to do. While you work on your Dyson, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!