Question about RTO Bodyguard T300 Commercial Treadmill

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Bodyguard t300 treadmill. belt will not turn

Treadmill come on. belt will not move. all I did is move it from 1 room to another. check connection, seem fine. error 12 speed sensor problems. any ideals.

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  • Kevin Butler SR. Jan 26, 2009

    yes,belt move seem like no power to the motor and incline motor.

  • Kevin Butler SR. Jan 27, 2009

    problem resolved. Smashed harness, created short

  • blueextc3221
    blueextc3221 May 11, 2010

    You may need to open it up. Locate the motor and be sure the connector has not been jarred loose. While its open , and you have a multimeter, ensure there is voltage at the motor power lead.

    If there is power, the motor has failed. If there is no power, you may have damaged the mainboard

  • blueextc3221
    blueextc3221 May 11, 2010

    if you get on, can you manually move it with your feet?

  • Anonymous Mar 22, 2014

    belt moves slow will not get to the required speed

  • Anonymous Mar 24, 2014

    treadmill powers on but low speed comes on display and motor does not run the belt.



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Smashed harness created short.

Posted on Jan 27, 2009


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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.

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To use these instructions, you need to have a familiarity with electricity and a working knowledge of a voltage multimeter. With all of these tests, USE EXTREME CAUTION!!! Never let the voltage ground directly to any part of the treadmill or your leads ground while you are testing voltage.
1) To begin, set your volt meter to AC volts. We are going to trace the power from the wall outlet through the treadmill to see where it ends.
2) With the treadmill unplugged, test the wall outlet. You should have from 115 to 125 VAC. Optimally, you will have at least 120 VAC.
3) Follow the power leads from the power cord to the lead ends. With the treadmill unplugged, connect your meter to the lead ends. Plug the treadmill in and check your reading. It should be the same as your reading from the wall outlet.
4) Continue this process with the electrical system, following the leads, as they pass through, breakers, fuses, and the like.
5) Where the power flow ends is where your problem is. Sometimes it will be in a bad connection, sometimes it will be in a shorted breaker or blown fuse, at times it may be as simple as a safety switch not working properly, or it may be a major problem with a component.
6) In some cases, components work in tandem (i.e.- a controller may need a signal from the console computer to release voltage to the motor.
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3) While testing for voltage, you can unplug your treadmill and test the fuses, breakers, and wiring harnesses. Sometimes a breaker may have shorted open and not tripped. Test these components individually. You want a closed circuit on all of them

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