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.


Specifications


Pictures



Wiring Diagram


Parts

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


PartDescriptionURL
1000111476Johnson Fitness 1000111476 Motor Control Board AFG HORIZON

https://treadmillfactory.ca/products/johnson-fitness-1000111476-motor-control-board-afg-livestrong-horizon

https://www.fitnessrepairparts.com/cart/ViewItem/49014509

Problem



Motor Controller Board 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

Testing MOSFET

A simple test to determine if the MOSFET has failed is to check for open circuit between Drain and Source.

Set multi-Meter to Diode Mode

Positive LeadNegative LeadExpectation
DrainSourceOpen Circuit


Schematic

Repair

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

2x Capacitors

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

LSG681M2D-2540LGR2D681MELA40

Power Diode30A, 600V Ultra Fast DiodeF30U60STRURP3060

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

 


Other Useful Information

Testing the Treadmill Motor

https://www.youtube.com/watch?v=Ckn5pOMPHHY


Reverse Engineered Circuit for another Treadmill


Another:


References

ReferenceURL
User Manual

Sercice Manual

FoulkesBrau #24 - Lets find the fault on this Trojan treadmill control board DCMD57P PT 1https://www.youtube.com/watch?v=gPR6Np6AoN4&t=1s
FoulkesBrau #41 - Lets find the fault on this Trojan treadmill control board DCMD57P PT 2https://www.youtube.com/watch?v=OrgnpCaxX2s
FoulkesBrau #42 - Lets finally repair the fault on this Trojan treadmill control board DCMD57P PT 3https://www.youtube.com/watch?v=ErWV33JC440
271 How to Repair Circuit for TreadMill - Circuit Explained /Troubleshootinghttps://www.youtube.com/watch?v=maw1yFxSSjA&t=0s
Heatsinking considerations for Common Cathode Rectifying Diodehttps://electronics.stackexchange.com/questions/447336/heatsinking-considerations-for-common-cathode-rectifying-diode
Electrical Engineering Stack Exchangehttps://electronics.stackexchange.com/