I've never had any problems with mine. The motor DOES have an overload switch. Could it have been activated by making too much dough? I thought that I read here that this had happened to someone. Or maybe the belt broke. They waited a day or two & the motor started working again.
Considering that I am the "someone" that posted about it, and even linked the thread in my post, you clearly didn't actually read my post before responding. If 750g flour, 480g H2O, 15g salt, 3.75g IDY mixed on speed 1 is overloading it, it ain't fit for purpose.
The original completely DIED. Not "shut down," not "tripped the thermal switch": DIED.
The replacement unit I bought DIED inside of 2 months. Shipped it back to Nutrimill. They EXAMINED it to confirm it was DEAD and hadn't been abused, AND REPLACED IT UNDER WARRANTY. The warranty replacement unit DIED as well. When I contacted them, they saw I had previously made a warranty claim and refused to take it back, even for examination.