If you know which outlets are on separate circuits, try using an outlet that is powered by another circuit. If you don’t have any power at the outlet, reset the circuit breaker or replace the fuse and try to turn your treadmill on again.

Some models may need to be opened to complete this step. If this is the case, be sure to unplug your treadmill before opening any electrical boxes.

If your fuses are blown, be sure to replace them with fuses that are that have the same amperage rating. [2] X Research source

Also check that you are getting power to the display. You can check this by using your multi-meter at the connection points between the power coming in and the display. [3] X Research source

If available, contact the manufacturer for information on further diagnostics to perform and for a list of qualified repair shops in your area.

Making this determination will help you make your next step. If the problem is with the belt itself, you may be able to make repairs relatively easily yourself. Motor or mechanical issues may be more difficult to fix at home.

Begin cleaning at the top of the belt and tug the belt firmly to move it downward until you have cleaned the entire surface. Be sure to let the surface get really dry before you use the machine. A wet belt could cause you to slip and injure yourself.

If the problem is severe, a technician should look at the issue.

Buy treadmill belt lubricant or any silicone lubricant. Spray lubricant in a thin layer between the belt and the treadmill deck. [5] X Research source For more information on how to lubricate your treadmill’s belt see: How to Lubricate the Deck of a Treadmill.

The sensor is usually in the interior of the treadmill’s bulk, near the belt. Consult your owner’s manual for the exact location on your machine.

You may want to take your treadmill to a professional repair person to replace your treadmill belt.

The manual may also tell you whether or not the problem can be fixed by you or needs to be fixed by a professional.

Be warned, opening up your treadmill’s motor is likely to void any warranties you may have on the treadmill. If your treadmill is still under warranty, it may be best to forgo any home repairs and go directly to a professional repair person.

Treadmill motors can be purchased at exercise equipment outlets both online and in physical stores.