Treadmill runs for around 45 seconds then the belt stops

Over the the last 6 months I have replaced the mother board 3 time's and the motor once on my ProForm treadmill. For the last 2 months it has worked fine. Yesterday I started to run and after around 45 seconds the belt slowed to a stop. Light on the control board flashed once every 1-2 seconds. Turned the treadmill off and back on and it did the same thing. The prior time it did this it was the mother board but ProForm thinks it's the motor. They just replaced it this past may. I tried adjusting the tension on the walking belt, checked connections, checked to make sure the motor and belt was not seized, and replaced the thermal protector. Nothing has worked. Any ideas would be greatly appreciated.


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