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Belt is not working electronically

Sportcraft treadmill TX 2.5 xt LED is working but the belt will not go around on its own, motorized, only manually. The treadmill is suppose to be motorized. The belt is not going around by the electronics.

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Posted on Jan 02, 2017

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  • 15 Answers

SOURCE: TX 4.9 sportcraft treadmill

Info from PDF files located on Sportcrafts website under manuals.
E3 – No speed sensor reading. Unit shuts down. This is the most difficult repair diagnose. The speed
sensor is connected to the frame of the treadmill near the drive pulley on the front roller. There is a
small magnet on the side of the pulley wheel. The sensor tip must be no more than 5mm from the
magnet. If for any reason the distance is greater than 5mm the treadmill will shutdown
Adjust or replace speed sensor.
Treadmill: Speed Sensor Replacement
1. Make sure your treadmill is unplugged before you begin.
2. Remove the motor cover located in the front of your treadmill, it is held on by a few screws.
3. Locate your speed sensor; it is the small T shaped part with a red and black wire coming from it.
4. Remove the 2 screws in the speed sensor and remove the old sensor.
5. Place the adjustment holder on the frame with the open holes facing the pulley wheel, the prongs facing
up and way from the pulley wheel. Insert the screws but don’t tighten fully.
6. Now place the speed sensor over the prongs with the square part facing the pulley wheel and the red and
black wire to the far right.
7. Plug the treadmill back in and slide the speed sensor until it is 5mm from the magnet inside the pulley
wheel, you may have to do this several times until you can position it so it no longer shuts down. Use 2
nickels to figure out the spacing. The width of 2 nickels is 5mm.
8. Once you find the correct position tighten the screws all the way; being careful not to touch any of the other electronics
9. Place the motor cover back on and enjoy your machine.

Posted on Oct 17, 2009

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SOURCE: Sportcraft TX 2.5 treadmill - error code 3 - stops

Sorry I dont have the solution but I have the same problem.
Read somewhere that Sportcraft control boards had
a design flaw.

Posted on Dec 20, 2009

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SOURCE: My sportcraft tx 2.5 treadmill does not have the safety key

any round magnet that will fit in the hole will work.

Posted on Dec 20, 2009

Testimonial: "Thanks a lot..This really helped"

  • 1 Answer

SOURCE: Treadmill stops after 7 seconds

you have a broken spinner. Take hte motor cover off and look on the opposite side of the motor. there will be a partof the spinner wheel there. I have yet to find a way to short cirut the connectors nor a replacement wheel.

Posted on Jan 08, 2011

  • 1 Answer

SOURCE: Can I fix my Sportcraft TX400 Treadmill ?

I just got a TX400 , I can't find the key. Do I need the key to have it turn on????

Posted on Mar 28, 2011

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How can I get my treadmill to stop knocking? I know it's not the motor.


Check the motor belt, more than likely has a burnt spot in it and can cause a knocking

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It depends on the frequency of the knock. Does the frequency change with motor speed?

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Treadmill speed varies with or w/o load. Belt not loose. Led speed indicator constant.


0ed98914-d0ff-4c07-aa5a-486eca10f03f.gif1) adjust the speed sensor see the diagram, clean the sensor very well, tight the connector very well.
2) LUBE the deck belt with silicone or wax READ your owner manual,

God bless you

Jun 03, 2013 | Sportcraft Tx5.0 Tx 5.0 Rc Treadmill Motor...

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Tx 5.o rc sportcraft treadmill varies in speed with or w/o load.


1) adjust the speed sensor, see the diagram attached, test for open or faulty. clean it very well. tight the connector very well

2) LUBE the treadmills very important . do it with silicone or wax. Read your onwer manual for verification.

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Jun 03, 2013 | Sportcraft Tx5.0 Tx 5.0 Rc Treadmill Motor...

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What causes my treadmill to slow down when i step on it


1) you need LUBE , with silicone lube, maybe you have a WORN deck belt, and is time to change.
2) LUBE the rollers bearing very well
3) test the bearing from the main motor, and repair too.

God bless you

Nov 11, 2012 | Sportcraft TX 4.9 Model 4041 Walking Belt

1 Answer

The threadmill stops when i step on the decke. Why?


1) this hapeen has a protection to the electronic system, the machine keep safe the electronic soft and hardware.producing a shut down.
Lube the DECK BELT, inmediately.

2) LUBE the rollers bearing too very well

3) TEST the input voltage motor, if there are the motor need repair.

4) Test the output voltage board, for input voltage motor, if there are NOT the board is faulty.

God bless you
9_4_2012_12_32_59_pm.gif

Sep 03, 2012 | Sportcraft Tx 4.9 Model 4041 B Walking...

1 Answer

My Sportcraft TX-400 Treadmill shuts off after 7 seconds


Dear sIR:
This by lack of LUBE, in your schedule maintenance DECK BELT. maybe the belt is worn.
2) Lube the roller bearing.
3) Align the belt see the diagrams
4) Test the input voltage motor, if there are voltage motor, the motor need repair.
5) Test the output voltage board, for input voltage motor, if there are NOT the board is faulty.
Now you can RUN the software calibration for diagnose, troubleshooting. See my personal TIPS for HELPs too.

sincerely. God bless you
5_7_2012_12_41_57_pm.gif5_7_2012_12_42_19_pm.gif

May 06, 2012 | Sportcraft TX 400 Walking Belt

2 Answers

Location of speed sensor on sportcraft tx 400 treadmills


It is a simple magnet and Hall effect transistor if you have 2 small wires. It usually attaches to the 1/8 inch mini plug. You can test it with an analog meter, the resistance will be stable at rest, and with treadmill in motion, the resistance will change as the magnet passes the hall effect switch. moving the track at slow speed manually will be enough to see the needle move. Speed is calculated off of the rate of those pulses.

Jan 23, 2012 | Sportcraft Exercise & Fitness

1 Answer

I have a sportcraft tx 2.5 treadmill thats needs it stops on 7 sec evertime i moved and lost the manual to it what should i do


Can you give more details? are you saying it stops 7 seconds after you step on it, (every time)?

If so, have you had the treadmill a while? this is an indicator of a worn belt. the belt is not sliding like it should, and drawing too much current. your control board will 'clip' the current off after a pre-set time, to avoid burning up components.

other things it could be:
1. your belt is too tight. did you tighten it lately? When did your treadmill start doing this?
2. The motor is going bad, and drawing too much current.
3. motor control board is bad.

look at your motor's current rating: measure the current draw when you get on it. if the current draw is ~ 80% of the rated current of the motor, and your belt is good,..and not too tight, it could be the motor.

if the treadmill is stopping while only drawing 4 or 5 amps, I would lean towards the control board is bad.

cheapest way to get started troubleshooting. Ensure the belt is not too tight, (adjust to only about 3 inches slack, when you pull up on it). next. buy some belt lubricant and lube it up.

If this doesn't fix your problem, keep looking for other fixya help. someone with SportCraft TX 2.5 specific experience. Sorry, I only have generic help here.

good luck.

Jan 25, 2010 | Exercise & Fitness

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