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Table of Contents

Overview

Get the results you want whether you're in training or trying to shed a few pounds with the Livestrong LS8.0T folding treadmill. The LS8.0T is equipped with a 2.5-horsepower continuous-duty motor, powerful enough to deliver speeds of 0.5 to 12 miles per hour and an incline range of 0 to 12 percent (in 0.5-percent increments). As a result, you don't have to compromise when working out--a must when training hard. The treadmill is also extremely comfortable thanks to the MaxComfort cushioning system. The system's adjustable cushioning technology allows you to customize your workout with a softer or firmer feel. With more support for each part of your stride, you'll recover quicker between workouts.

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https://fitnessgraveyard.com/collections/livestrong-treadmill-parts


Problem

  • Short when powered on. Trips breaker.
  • Problem resides on the motor control board. MLH0910PC Johnson.



Motor

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Control Board

Pictures

Image AddedImage AddedImage Added

Chips

PartPackagingManufacturerDescriptionURLDatasheet

F30U60ST


TO-220F-2Fairchild Semiconductor

Power Diode

30Amperes,600Volts Single Insulated Package Ultra Fast Recovery Epitaxial Diode

https://www.findchips.com/detail/f30u60/229119968-Taiwan%20Semiconductor?quantity=1

https://www.veswin.com/product-F30U60ST.html


Simular Products:

https://www.mouser.ca/c/semiconductors/discrete-semiconductors/diodes-rectifiers/rectifiers/?instock=y


Alternative: 

https://www.mouser.ca/ProductDetail/onsemi/RURP3060?qs=sGAEpiMZZMueQxo7L%2FBPyF09REKHpFFZ

Requires TO-220 insulation Kit

https://www.mouser.ca/ProductDetail/Aavid/4880SG?qs=sGAEpiMZZMtffRBI%2F27p9JYW0t%252B%2F3jzEGvu8gWZ9pJc%3D

A13210 mm between leadsLelonCapacitor 680uF, 200v

https://www.mouser.ca/ProductDetail/Lelon/LSG681M2D-2540?qs=Y6HSjCmVMmsSFLrzeQ73KA%3D%3D


Alternative:

https://www.mouser.ca/ProductDetail/Nichicon/LGR2D681MELA40?qs=Z3Dcwn12tY3vbf%252Bvdia1Mg%3D%3D


IRFP260NMOSFET

https://www.mouser.ca/ProductDetail/Infineon/IRFP260N?qs=sGAEpiMZZMua%252Bgb89%252BTvM14gkw5lvIhj8Vs7uxjiQ0A%3D

https://www.mouser.com/catalog/specsheets/international%20rectifier_irfp260n.pdf

https://www.vishay.com/docs/91215/91215.pdf

Other Chips - Not Replaced
SDT-S-112Relay

12v 10A

250VAC, 30VDC


http://www.farnell.com/datasheets/1846829.pdf
RS207Bridge RectifierSunB2A
https://www.tme.eu/Document/d3a172b985a974f931d945323264d945/rs201-rs207.pdf
5L0380R

Power Switch(FPS)

Fairchild
https://www.datasheet-pdf.info/entry/5L0380R

https://www.datasheet-pdf.info/attach/1/3619092488.pdf

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We identified that the MOSFET, power diode and the large capacitors needed replacement on our motor control board.

Replacement Parts

PartSpecificationOriginal Part#Replacement Part#Image
MOSFETPower MosfetIRFP260NIRFP260N

Image Modified

2x Capacitors

Aluminum Electrolytic Capacitors - Snap In 680uF 200 Volts 20%

LSG681M2D-2540LGR2D681MELA40

Image Modified

Power Diode30A, 600V Ultra Fast DiodeF30U60STRURP3060

Image Modified

TO-220 Insulation KitInsulation Kit required because the new diode does not have an insulated packaging.-TO-220 Insulation Kit

 Image Modified


Other Useful Information

Testing the Treadmill Motor

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