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My Horizon t51 treadmill started to get slower (4.0mph but felt like 3.0mph) finally it just quit altogether. The screen comes on and the elevation works but it doesn't run.

Seemed to get slower and then just stopped working, everything on the console lights up but the motor doesn't run

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You can see if the motor is the direct issue by disconnecting power from the machine.

Go under the hood and remove the pos and neg terminal from the lower control which are connected to your drive motor.

Use a Vexlar battery or the battery from a cordless drill. Tough the positive and negative terminals to the corresponding connection on the battery source.

The battery will make the motor run at a slow speed.

You can also take the pos and neg terminals from the motor and touch them together. If you manually spin the motor there will be a considerable amount of resistance fi the motor is functioning. if there is no difference in resistance with the terminals completing a circuit or not completing the issue is inside the motor.

Chech the motor to see if you have replaceable motor brushes, these are designed to wear out and are replaceable.

The Greatest issue is you are not recieving an error code on the screen about the motor not responding. Calibration of speed is an option, but the issue could go into the MCB (motor control board), large and only circuit board under the hood. The MCB is probably bad because it is not communicating the issue and the motor may also have issues if it doesn;t respond to any of the testing steps above.

Posted on Jan 05, 2013


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Posted on Jan 02, 2017

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SOURCE: I have a proform j8li treadmill, all 4 led lights

I have the exact same problem with the very same treadmill that i bouth 10 years ago and it has been sitting for 5 years unused. The last time it was turned on it worked but now that I plug it in and try to start it, everything works but the belt drive motor. Any ideas?

Posted on Feb 09, 2010

  • 2 Answers

SOURCE: my Vision Fitness t8500 treadmill's deck just

I had the same problem. I even ordered a $300 controller board. The new board didn't work either. That's when I started checking voltages from the control board to the motor. That was good. Lastly I checked the brushes. Almost nothing left. . . The motor started working again after I put everything back together. I need to order new brushes and return that contoller board.

Posted on Apr 12, 2010

  • 832 Answers

SOURCE: I have a Horizon elite 507 treadmill, everything

Unplug your treadmill and remove motor shroud ,locate Motor control board their a series of LEDs . Now without getting on treadmill hit start look down and you should a light starting to flicker this is your PWM signal, t the upper console sends a signal to the lower board and instructs the motor to start. This tells me that the upper board and cable are functioning properly and our problem is either the board or motor.
DC motors can be easily tested in a number of ways. Many times a motor is replaced only to find another problem exists so be sure to test the motor if you think it is a problem. Methods to test a motor: 1) Cordless drill battery- get a fully-charged, 18 volt (preferred) cordless drill battery and on most treadmills connect the red and black motor leads to the battery (some have different colors but if you have two wires and get it hooked up backwards, the motor will just run backwards and won’t be harmed). If good, the motor should operate at about 1 MPH. 2) Car battery- these are 12VDC high amp batteries so the motor will turn slowly but you can walk on the belt. Always be careful with battery acid on these things so we don’t recommend bringing them in the house…take the treadmill to the battery.
If the motor test good then all fingers point to the Motor Control Board replace the board. When was the last time lubricated the running deck?
Answer: Never ! Then I suggest you purchase lubricant and apply it on the deck about 75% to 85% of the problems are belt and deck related.

Posted on May 23, 2010

Testimonial: "Many thanks for prompt response, seems that the treadmill works only when in the upright position and not the horizontal as per normal. Gonna have to learn to run up walls i guess"

  • 832 Answers

SOURCE: Horizon Treadmill T5.1. A sudden vibration and

To find a specific bearing that has gone bad in a treadmill you can use a long handled screwdriver and touch it to a non-moving portion of the rollers and then put your ear up to the handle and the screwdriver will amplify the noise of the part so you can find out which part is making the noise. If it is a bearing, it will be obvious which part is the problem because the grinding noise of the bad bearing with be amplified by the screwdriver.

Posted on Jun 11, 2010

  • 1 Answer

SOURCE: horizon treadmill won't start running

The manual said that after lubricating the deck, press Stop and Speed buttons together for 5 minutes and this will reset the lubrication message and the treadmill should work.

Posted on Aug 22, 2010

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How to calibrate a Vision Fitness Treadmill - Residential Models

If you are not quite sure about the speed/elevation of your machine you can perform the following to test/correct your Vision Fitness treadmill.

1. Remove safety key and then replace
2. Hold the elevation up and speed down buttons until it beeps 3 times
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5. you should see the word "auto" on the screen at this point
6. Making sure you are not on the treadmill at all, press start.

The treadmill will go through a few tests to determine the maximum and minimum of both speed/elevation. You can see the results on the display as it is performing this test and if there are any discrepancies the machine will adjust the settings to make the appropriate speed/elevation calibration.

If the test passes it will display "end" and from here just remove and replace the safety key. You should notice a difference in the speed right away.

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1 Answer

The motor will not move

test voltage from output control board motor, for input voltage terminal motor, if there ARE not voltage, the control board is faulty.
see my personal TIPS for motor.
2) test the terminal voltage motor, if there ARE the motor is faulty.
3)loose the belt and try again if the motor is running the problem is the deck belt board, LUBE it.
God bless you356531a7-34d7-49c5-b4b2-83d2982da514.gifafae3425-f7ac-48a8-b373-2402f885bb57.jpg

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plelase see this 2 alternatives error and proceed see the diagram attached. God bless you

E7- 1) Alternative Elevation Motor

1)Cause: Elevation Motor not moving Solution:Check Elevation Motor connection

2)Cause: Elevation Elevation Motor screw binding Solution: Clean screw and lubricate

3)Cause: Elevation Motor Motor out of Range Solution: Check motor out of elevation

4)Cause: E-Motor Potentiometer: Solution: Replace Elevation Motor


Display Doesn't Light Up: a)Cause: On/Off switch Solution: Test unit is turned on b)Cause: Insufficient Power Source Solution: Plug dedicated120V, 20Amp Outlet

c) Cause: Line Cord Damaged Solution: Replace Line Cord

d)Cause: Fuse Solution: Check Fuse on MCB

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