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Manage My Life

My Pro-Form 755 CS treadmill speeds up and slows down on its own.

by Manage My Life Last activity date:
November 25th, 2011

My Pro-Form 755 CS (model # 831.299570) does not maintain the speed I set it to. It speeds up and slows down while in use but does not get to the speed to which I have set it. I followed the diagnosis instructions for the Power board and the motor contoller board and they both checked out OK (according to the LED lights). The belt does seem to be adequately lubricted. I noticed that the choke has been humming loudly lately and now when I tap on it while the motor is running, the humming changes and sometimes disappears. However, the speed problem continues. Does this sound like I need to replace the choke? Is there a way to definitively diagnose this before I order the part? I believe the part number of the choke is 130993.

Tags:
Treadmills , Home Cardio
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Manage My Life
A treadmill is definitely something we depend on and when it begins to malfunction it can be a huge inconvenience. While you are waiting for an expert to respond, I have attached some helpful links below that may provide information to assist you with your question.
Answered in 5 minutes
by Manage My Life
November 25th, 2011
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