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This person installed a new lift motor and had the same issue, so another new lift will do the same. What make/model of treadmill?
Lift commands come from the console to the lower board. Precor and some others use a Triac circuit to provide 120vAC for up or down, these parts can fail on the lower and cause this problem. Johnson Brands like Matrix, Vision, Horizon, Merit and others, use a relay set for up and down also commanded by the upper board.
I have seen upper boards cause this very problem. Contact firstname.lastname@example.org for more help if needed. Good Luck
Can be the motor or the motor control board faulty. You have to check the motor brush if it's OK the you should go for a new Motor control board.
if you wish to get some more details about treadmill repair then check the following link. http://electro-medical.blogspot.com/
Sounds like a faulty motor starter if equipped or motor it self faulty.
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Hi There, ... it sounds like a bad lower control board or MCB. Most control boards used by Johnson Health Tech, parent to Matrix, Horizon, Vision, Merit, AFG and others, have a small potentiometer on them for torque and/or speed adjust, that can be gently turned to the right, CW, to about 3/4 turn as the torque adjust widens the current sense threshhold slightly allowing a bit more current to the motor. This adjustment should only be done with the unit off unless you are used to working with treadmills. Fitness Remedy in Sun Prairie Wis., repairs most fitness electronics.
The CT-7.1 is the exact same treadmill as the Horizon T-202.
Treadmills use brushed DC motors. It is possible that the brushes are worn out. You may be able to purchase new brushes on-line. You can source them by searching for replacement parts for either of the above two makes and models.
It is also possible that some circuitry on the control board has been damaged or even something as simple as a sensor switch has failed.
I doubt you need a new motor if you have not checked the brushes. Hard to put the clips back in place though. I am having trouble doing this. You may have a Horizon treadmill. If so you can down load info from there web site. Although USA web site. UK bit stuck on that.
open motor shroud and inspect all connection on the motor control board see if all LED 's are lit except that light up when incline motor is moving up or down. then check the two connector coming from the drive motor to the board sometime over time the two connector will have a cold soldier I would move them to see any excessive movements of the pins then hit start and see if there is any belt movement. Last but not least unplug unit and check the motor brushes if they are less than 3/8 in in length replace them. Call them @ 1-800-335-4348 they under their parent corp. Johnson fitness.