+1 for Gary's answer. I have a DC25 that had the same behavior. I overhauled the power switch mechanism more times than I care to remember without luck. After reading Gary's post, I dug into the angle release mechanism down toward the wheels. I found the switch that is triggered when the vacuum is released from vertical, cleaned the contacts with a small file, and reassembled with a little dialectic grease. On mine, the switch was in the levering mechanism, not in the ball. Everything works great now.
The answers to this question helped me and I thought a picture of the switch near the ball would help. I am pointing to the black switch with a pen in the photo. 3 screws and you can get too it. In the photo you can see the cover removed after the screws are taken out. Also mine looks slightly different as the wheels that hold it upright when stored broke so I just took them off.
You might have a bunch of hair or something tangled up in their. Look at each ends of your brush. Get some scissors and cut the problem off/out. Or maybe the belt came off PR broke.
THE JOHNSON DF651(2)LG DYSON DC24 Vacuum Cleaner BRUSH BAR MOTOR USED IN THE US MODEL OF THE DYSON DC24 ONLY LASTS ABOUT A YEAR! NO REPLACEMENT MOTOR FOR THE US MODEL IS AVAILABLE, ONLY A 220- 240 VOLT DC IS AVAILABLE IN THE UK. IT IS NOT COMPATIBLE WITH THE US MODEL DC24 AND CAN’T EVEN BE SHIPPED TO TH US. THIS IS A DEFECTIVE MOTOR AND DYSON OUGHT TO REPLACE IT FOR FREE UNDER THE LEMON LAW! (AS IF THERE WERE SUCH A LAW) THIS JOHNSON MOTOR IS JUNK AND THE ONLY WAY TO REVIVE A DC24 WHERE THE BRUSH BAR DOESN’T TURN IS TO PURCHASE A NEW DC24 CLEANER HEAD ASSEMBLY!
