The roller on my LUX4000 starts rolling and then stops but the motor keeps going

SOURCE: brush roller stopped rolling

My daughters is doing the same thing and the plastic at the ends of the brush bar melted just enough for it not to turn properly. You might want to chech that.

SOURCE: Oreck belts keep coming off

If the pulley on the brush roll is worn, then I would replace the brushroll. Look at the ends where the brush roll sits in to make sure the casing hasn't over heated and not holding the brush in place. Also make sure the motor is shifting and causing the belt to come off. Another is if you are catching a rug or towel, that also will cause the belt to come off. I am assuming you using a new belt and not a worn one. After only a short time, belts stretch and need to be replaced.

SOURCE: Hoover WindTunnel Canister: Roller brush motor not turning

These motors have a fuse incorporated in the field winding and it sounds like that blew. These motors sometimes overheat at the front bearing and the bearing will melt into the plastic housing. This will cause the fuse to blow. It sounds like that's your problem. You can remove the motor by removing the three screws on the bottom of the powerhead and then check the front bearing for any bubbling or blistering in the plastic housing. The shaft of the motor should turn easily.

SOURCE: Roller/sweeper on my Electrolux Pronto

After 3 years my Pronto slowed down and needed new batteries. I just replaced all 8 internal batteries. It cost just under $30 with shipping and took 1 hour of soldering. If you're not handy with a soldering iron, don't attempt it. All of the batteries are soldered together in series. You need to order the 8 (4/5 Sc size, 2000 mAh) Nickel metal hydride (Ni-MH) batteries with tabs. The source I used was www.BatteryJunction.com. Here's a link to the battery page: http://www.batteryjunction.com/tenergy-45th-sc-1-2-2000-tabs.html

PS The vac now runs GREAT!
Russ

SOURCE: roller motor on a DC17 dyson wont turn on

there is a reset button under the cover that houses the on/off switches. remove the handle/wand and look on the back (where the top of the hose sits) for 2 screws (its a torx/star head screw size t10 i believe). remove them and locate 4 small locking tabs that hold the switch cover to the frame of the vacuum. Depress them and pop the cover off (2 towards the top and 2 towards the bottom). Youll see 3 switches (2 square red buttons and one small cylindrical shaped one). Push the small red one (the one to the left if my memory serves me right). you should hear a click. if you do than the switch is reset. if not check all connections to all 3 switches. if you see nothing loose or not connected, you may need a new brushbar motor. try it