Hi All - I recent posted about my NordicTrack 1750 which became faulty and then caught fire. (https://forum.allaboutcircuits.com/...648dls-ze0824-rev-bang-fire-and-smoke.207494/)

I have been trying to take this up with the manufacturer and also the supplier who sold it to me. I had a 2 year warranty which expired 6 months before this issue, but the treadmill had barely been used in the past year due to injury. In the UK, if the product is out of warranty, but within 6 years of manufacture, the onus is on the consumer to prove that the fault was inherent when bought, and not developed out of misuse.
I have seen so many posts on here, and elsewhere where same symptoms have been written about (motor stopping, overheating etc) -

NordicTrack did supply me with a new motor, but said I should change the control board too (which I need to anyway due to the fire) - But I have not misused this product and I believe it should not fail after 2.5 years (let alone catch fire) - Either the mosfets are under rated for the boards, or the safety cut out feature does not work well to shut off the machine before catastrophic damage -

So the question is, how would you go about making a case to prove to support that the control boards are not fit for purpose out of the factory? I can take the supplier to court ( there is a small claims court process in the UK where one can try and recover small costs for £35 ($50)) , but I would need to get an engineers report to support my claim (but no idea how to go about that) - Anyone here have experience of writing such a report?

 

On a related note, I have one of these boards on its way from another member for reverse engineering and diagnosis of the problem.
Maybe show up the weak spot they have. ?

 

On a related note, I have one of these boards on its way from another member for reverse engineering and diagnosis of the problem.
Maybe show up the weak spot they have. ?

It would be excellent to know the result - If, as I suspect, the board design is weak, it would help my claim, but in the bigger picture there could be a class action - So many people I have read about with newish treadmills turned into ornaments,

 

Typically with these boards, there is usually a relatively easy fix, but as has been shown here by previous posts, on the MC2100 & MC60, where someone has taken the time to reverse-engineer them, troubleshooting is a heck of a lot easier. !!

 

@MaxHeadRoom - I finally found the discussion I think I have referenced re: upgrading the Mosfet on these type of boards - I just thought I would add it in here in case it offers any helpful opinion - (Its a fraction above my head) - https://www.reddit.com/r/AskElectronics/comments/16yx2vj