ProForm 795SL slows down under load

Under load, the motor slows to a crawl. (ProForm 795SL) No load or just a casual walk/run it runs fine even at level 10. Seems like a current issue but we have used multiple 12ga extension cords and outlets. It used to work OK, I am starting to question one of the 3 D4020L Rectifiers on the board. Not sure how to test them.


  • this could be as simple as a worn walking belt. do you keep it lubricated? how old is the belt?
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