Model #831291660 PROFORM Treadmill

  • Frame Assembly
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Question and Answers

Q:

incline function not working on Pro Form 770 EKG

A:

Thank you for your question. The diagram for the screw locations is a little confusing. I think you mean to remove the motor cover? After unplugging the machine,and removing the key, carefully lower the uprights to the floor. You will find three small screws. These would be key #37 in the exploded diagram in the manual. One at each side and one toward the front. They sometimes sit back in little hollow tube indentations. A Phillips screw driver will likely be needed. Once you have those removed, the treadmill can be set upright and the hood cover flipped back.

The following are the possible problems and fixes associated with this type issue.

Plug the treadmill's power cord into a surge suppressor; plug the surge suppressor into a grounded outlet. Tighten or loosen the rear roller adjustment bolts to center, loosen or tighten the walking belt. Realign the reed switch, located within the motor, so it lines up with the magnet to fix console display problems. Recalibrate the incline, if it doesn't work properly, by removing the key while pressing an incline button; re-insert the key and the incline automatically calibrates. Tighten any loose bolts before each use to prevent treadmill problems.

If you need help with this repair, a technician can be scheduled at Sears Home Services.  If further help is needed, please reply.  Thank you for using Manage My Life.

 

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Barbara H. -
Sears Technician
August 23, 2013
Q:

How do I fix a Proform 770 EKG treadmill?

A:

I know how important it is to have a good working treadmill in the home so that you can get a good workout to feel great. I am adding two links below to help you with your question while you wait for your expert response.

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Joseph P. -
January 31, 2012
A:

Does the belt seem loose? I've been playing with mine because I'm having issues with it tripping the breaker, but what you are saying may just be the belt. Are you familiar with tightening and loosening the belt?

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Jason -
January 31, 2012
A:

Trying calibrating the speed on your machine. You can watch THIS VIDEO to see the procedure for this.

Also, you may try checking the walking belt tension as well as the drive belt tension. You can watch THIS VIDEO to see the procedure for the walking belt tension adjustments.

If neither of these situations seems to correct the problem then it's most likely going to be the controller failing on your machine. You can check the motor with a volt meter to see if it's failing but I have a feeling it's fine. To check the motor: Remove the red and black power leads from the motor at the controller. Then connect the meter to those leads (meter connected to motor). Set the meter to read DC voltage. Put the safety key in place and then walk on the treadmill (manually, do not press any keys) up to 3mph. At 3mph the meter should read 28VDC or more. If it's less than that the motor has failed. If the voltage is 28VDC or better then the motor is fine and just the controller will be the issue. If the motor does check out bad, I would replace the motor and controller as a set.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
February 02, 2012
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Q:

My Pro-Form 770 EKG Treadmill display will not turn on.

A:

I understand your concern toward your treadmill not turning on, I know that exercise is very important for the body. While you are waiting for an expert answer, i did manage to find a link that will provide you with more information about your problem. I hope my link is useful.

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Joseph P. -
October 04, 2010
A:

When the treadmill motor doesn't start it can be caused by the motor, controller, power board, console, or a wiring harness. I am sending you a wiring schematic for your treadmill, and instructions for putting the treadmill into the calibration mode. To test the voltages to and from the console and boards the treadmill has to be in calibration. Don't stand on the walking belt because you might move a wire causing the treadmill to start turning. The console will beep while it is in calibration, let it beep, it won't damage it. Read the voltage to the console between the red and either black wire, it has to read between 8-12 volts dc. Between either black and the blue wire you should read 1-5 volts dc. If you don't have the 8-12 volts between black and red, the power supply board is bad. If you have the 8-12 volts and not the 1-5 between blue and black the console is bad. If you have the voltage coming from and going into the console remove the hood covering the motor and front roller of the treadmill and read between black and blue at the connector going into the power board. It should be 1-5 just as it was at the console. If you don't have this voltage the wire harness between the power board and the console is bad. If you have the correct voltage at blue and black coming into the power supply board go to the motor controller board and check the voltage at L, W, and H on the controller. If you have the voltage between L and H but not between W and L the power supply board is bad. If you don't have voltage between L and H the controller is bad.

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Jimmy K -
Sears Technician
October 05, 2010
A:

How can I reset the Proform 770 EKG. when I put in the key the light comes on and them goes away and simultaneously the elevation goes to the maximum and then goes down all the way and keeps repeating. I have tried powering down and repowering but it does not help. Please advice

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Nadeem -
January 25, 2012
A:

I have a Pro Form 770 EKG How can I reset the Proform 770 EKG. when I put in the key the light comes on and them goes away and simultaneously the elevation goes to the maximum and then goes down all the way and keeps repeating. I have tried powering down and repowering but it does not help. Please advice

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Nadeem -
January 25, 2012
A:

Nadeem, the answer I sent to the previous question gives you the information you need to troubleshoot your treadmill. I am sending some images showing how to calibrate the console. If this doesn't help, I recommend you go to www.searsservices.com and get a technician to repair the treadmill.

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Jimmy K -
Sears Technician
January 26, 2012
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