Treadmill: Won't power up

A failed power supply, broken power cord, tripped circuit breaker switch, failed circuit breaker switch, bad power switch, wiring failure, bad motor control board or failed console display can prevent the treadmill from powering up.

Make sure the electrical outlet the treadmill is plugged into has power by plugging a lamp or small appliance into the outlet to see if it works. If the outlet is dead, reset the house circuit breaker to restore power to the outlet. If the outlet still doesn't work, plug the treadmill into a different outlet and have an electrician repair the broken electrical outlet.

If the electrical outlet works, unplug the treadmill and check the power cord for damage. Replace the power cord if it's damaged. If the power cord is okay, check the circuit breaker switch on the treadmill and reset the circuit breaker switch if it's tripped.

If the circuit breaker switch isn't tripped or the treadmill won't power up after resetting the circuit breaker switch, use a multimeter to check for continuity through the circuit breaker switch (with the treadmill unplugged). Replace the circuit breaker switch if the meter measures no continuity.

If the meter measures continuity through the circuit breaker switch, check the power switch for continuity (with the treadmill still unplugged). Replace the power switch if the meter measures no continuity through the power switch with the power switch turned on.

If the power switch is okay, check all wires between the power cord connection and the motor control board. Reconnect any loose wires and repair any broken wires.

If wiring that connects power to the motor control board is okay, check the wiring between the motor control board and the console display. Replace any loose wires and repair any broken wires.

If wires between the motor control board and the display control board are okay, then a bad motor control board or a failed console display could be preventing the treadmill from powering up.

treadmill

These repairs may help solve your treadmill problem

Replace the treadmill console display

Replace the treadmill console display

The console displays the elapsed time, distance traveled, estimated calories burned, current speed, and the user's pulse. If the console doesn't work, replace the console display assembly.

Replace the treadmill motor control board

Replace the treadmill motor control board

The electronic motor control board controls and monitors the speed. If the motor controller is defective, replace the motor controller.

June 1, 2015
By Lyle Weischwill
How to replace a treadmill motor controller

If your treadmill won't run at the speed you set, the motor controller could be to blame. This repair guide and video show how to replace a treadmill motor controller in just 15 minutes.

Repair difficulty
Time required
 15 minutes or less
Read more
Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor control board
Main causes: bad control console, wiring failure, bad motor control board
Main causes: rear roller out of alignment, damaged walking belt, bad roller
Main causes: damaged walking belt, improper belt tension, bad roller bearing
Main causes: faulty sensors, wiring failure, bad control console
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor
Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using these steps.

Repair difficulty
Time required
 45 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the walking board if it's worn or damaged.

Repair difficulty
Time required
 30 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn't run.

Repair difficulty
Time required
 15 minutes or less
Articles and videos for treadmills

Use the advice and tips in these articles and videos to get the most out of your treadmill.

December 21, 2016
How to troubleshoot treadmill problems
By Sears PartsDirect staff

See what to check if you're having a problem with your treadmill, and what you can do to fix it.

June 29, 2015
Easy DIY treadmill repairs
By Sears PartsDirect staff

Learn about treadmill repairs that you can easily do yourself.

May 10, 2015
How to maintain a treadmill
By Sears PartsDirect staff

Keep your treadmill in shape by following these tips.