Hi All,

Having read through various posts, I can see that NordicTrack treadmills have often been a topic on here - especially the control boards which seem to have a habit of failing -
The components are covered by a 2 year replacement warranty and my lightly used machine (2.5 years old, but hardly used for 12 months due to injury) began exhibiting issues where the motor would slow to a crawl mid workout (giving out a blink code - single blink - fold back mode) - Temperature readings of the heart sink showed this happened after about 69 degrees centigrade, though I have seen upwards of 80 degrees C

I contacted iFit/NordicTrack who have offered to send a new motor, but recommended changing the board, and the same day the board went bang with a fire from one of the resistors (R17) and a component next to it -

NordicTrack will not provide a replacement board for free as I am out of 2 year warranty - Now, warranty does not exempt iFit from supplying something which is of suitable quality - in the UK, the consumer act 2015 provides some form of protection for consumers - a 1750 Commercial treadmill should be expected to last more than 2.5 years. - so I have started court proceedings in the small claims court.

I may need to prove that the defect must have been present when I bought the treadmill - On the basis of the burnt out board, what would cause this burn out? defective components? under rated components? too much current

I am just trying to get some education and explanation as to what has happened to my equipment - If it has caught fire, should these be recalled for safety issue?

Photo 1 shows the burn
Photo 2 shows a stock image - (not my board)

Any thoughts welcome.

 

The MC1648 is a new one on me, I am more familiar with the MC2100 versions. Of which there are a few BTW.
But most faults centre around the mosfet which appears so in this case?
Test the power device (mosfet) mounted on the HS next to the failed compinents .

 

Thank you very much for the reply - I will try and check the Mosfet tomorrow. I read (on here I think) that someone had replaced a Mosfet on one of these boards (or similar) for a higher rated one - like 50A compared to 20A - but I cannot find it now. Based on the fact that you @MaxHeadRoom have been around on this site for a long time, you may remember this type of upgrade?

 

Don't recall it, may be a good idea?

 

The MC1648 is a new one on me, I am more familiar with the MC2100 versions. Of which there are a few BTW.
But most faults centre around the mosfet which appears so in this case?
Test the power device (mosfet) mounted on the HS next to the failed compinents .

If he found the mosfet, what he will do with burned smd resistors on board close mosfet in the photo?
How he can know the value of these burned components to replace?

 

A little reverse-engineering, together with the reverrse engineered schematic posted here may indicate the neccesary clues.

 

If he found the mosfet, what he will do with burned smd resistors on board close mosfet in the photo?
How he can know the value of these burned components to replace?

I think I can see that the component was a 101 resistor by comparing it to other photos, but if the component U3 next to it is fried, then I think I am stumped without some help from another owner.

 

A little reverse-engineering, together with the reverrse engineered schematic posted here may indicate the neccesary clues.

Did you ever receive one of these boards to reverse engineer? I would be keen to know of your findings.

 

Yes, I did get hold of a working board, but other projects have been taking precedence for now!

 

Yes, I did get hold of a working board, but other projects have been taking precedence for now!

Thank you for replying - No problem.. I would love to know more about any findings you may uncover in the future. Meanwhile, I have been offered an goodwill out of warranty repair, so hopefully I will not need to go down any legal routes to achieve a fix.