Vacuum starts and will shut off afte seconds. Please Help

Hello,

I have three Vacuums of the same model that are doing exactly the same thing. I will turn the vacuum on and it will cut off after a few seconds and the jam light comes on. These are some of the things I've done so far.

- Checked hoses and brush roll for blockage.

- Changed outlet and cords out.

- replaced bag

Part swapped every component from a working vac and still had the same issue. I have pictures and diagrams of the vacuums in the link below. Anything would really help. Thank you.

http://www.cleanmaxvacuums.com/support/m...