While you wait for answers, we may have found some information which could help you.
Click here for Treadmill Not Workingtx 300 sporadic speed changes?
Why does my Sportcraft Tx 4.9 run slowly?
My tx4.9 sportcraft treadmill has power but wont run just has a 7 in the ca?
I have a sportcraft TX 550 treadmil that stops working after 8 sec ?
Is there anywhere i can find a motor control board for my sportcraft tx4.9 ?
Treadmill?