It will be your motor. Just buy a new machine as you will get a warranty. replacing your motor will give you a tenner change on the price of a new machine.
How do I know ?
I have been stripping down and testing the individual components of my own machine today
The trip will not happen if you disconnect the earth lead from the motor. I am not advocating but illustrating how I found our fault
Yours James Walker
James Walker
September 2007