how to fix speed control?

I have a sportcraft TX 550 treadmil that stops working after 8 sec ?

Why does my Sportcraft Tx 4.9 run slowly?

What can i do to fix it the number 3 show up?

My tx4.9 sportcraft treadmill has power but wont run just has a 7 in the ca?

Treadmill?

tx335?

tx 300 sporadic speed changes?

How can i fix my tx400 sportcraft treadmill model #04040?

remplacer l'aimant démareur,(rouge.)?

My treadmill stops when it hits 3 and will not go. Do not know what to do?

need speed sensor wheel?

Is there anywhere i can find a motor control board for my sportcraft tx4.9 ?