I had the same problem and I manaed to fix my Cuisinart SmartPower Duet blender. There are two thermal fuses, one tape attached to each stator winding. Both of mine were blown.
In addition, when the fuses blew, it must have spiked the triac. I had to replace mine. It's the black 3-legged transistor looking device with a small metal heatsink attached to it. This gizmo directly throttles the power to the motor under control of the microprocessor. There are some guides on the internet on how to test it.
Also, the clutch was very hard to remove and needs to be removed to more easily replace the thermal fuses. I clamped down the end of the motor shaft to a bench vise real hard and then I used a 7/8-inch open-end wrench to wedge into the clutch prongs which made it much easier to apply torque. Remember that its screw threads are reversed from normal screws so that it does not unscrew during operation. You have to turn it counter-clockwise to unthread it.
Hope that helps!
-Vince
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