Attempting to Repair the Confidence Treadmill

So I recently had a catastrophic failure of my Confidence Power Plus Treadmill , I opened it up in an attempt to fix it. I’ll let you know early and now that I failed. However, I made this page to document what I learned so that maybe you can do better than I did. I ended up buying the same model, since I’m still a poor graduate student. However, I did make sure to get the SquareTrade 3-Year Fitness Protection Plan this time, since this last one lasted 1.6 years. (Still a great length of time for the price, considering how much I mistreated it!)

The way my Confidence Power Plus Treadmill failed was very sudden. The speed suddenly increased to the max (which isn’t really that fast, so I wasn’t hurt), and it no longer responded to the control panel. I freaked out and unplugged the thing, took off the plastic motor casing and looked inside to see if I could find anything that was obviously wrong.

Confidence Power Plus Treadmill Power Board, Damaged

Damaged Power Board

Sure enough, there is a charred (not especially visible) circuit element in the top right, I think it’s a diode. In any case, it looked like it was fried. Since the treadmill still ran, just at full speed, I thought that it was just the ability to control the speed that was damaged. The motor was rated at 500W, 6A, 100-120V, DC, so I thought I could find a controller unit that I could possibly connect between the wall and the motor, or between the damaged power board and the motor. It might even improve its function in that it would no longer stop every half hour. I ended up buying a: HOSSENĀ® NEW 6V-90V 15A DC Motor Pump Speed Controller. However, as I stated at the beginning, THIS DID NOT FIX MY PROBLEM. This is just a documentation of what I did so that perhaps someone who knows what I did wrong can let me know. I thought that the item I bought was a DC to DC controller board that would taken in DC, which I thought the treadmill power board was outputting, to the motor, which takes DC. I cut the power wires to the motor and placed the item in line. The + and – wires from the damaged power board went to the + and – power inputs in the controller board from amazon, and the outputs on the amazon board went to the motor.

Confidence power plus treadmill internals

Confidence power plus treadmill innards with snipped motor power wires.

Snipped Confidence Power Plus Treadmill Motor Wires Connected To Controller Board

Snipped Confidence Power Plus Treadmill Motor Wires Connected To Controller Board

Ok, seemed like it should do the trick to my non electrical engineering mind. DC on both sides, motor on one, power on the other, controller unit in the middle. I turned on the power and blew the circuit breaker as well as the fuse on the, now even more damaged, power board.

Blown fuse on the confidence power plus treadmill power board

Blown fuse on the confidence power plus treadmill power board

Ok. I failed. Still not sure why, but looks like I’m out of any chances of recovering my treadmill. I now have the decision of getting another Confidence Power Plus Treadmill for about 200 bucks. Or to upgrade to the much more expensive LifeSpan TR1200-DT3 Standing Desk Treadmill. The Confidence Power Plus Treadmill served me well until the end. It has come down in price since I bought it (I bought it when it was around $250, now it’s around $200), and aside from the annoying “feature” that it stops every half hour (which might actually be a feature to help prevent it from overheating), it worked very well. The LifeSpan TR1200-DT3 Standing Desk Treadmill. Is much more expensive, and for the price, it would need to last for about 7-8 years to make it worth it in terms of price compared to the cheaper treadmill. I doubt any treadmill could last for that long with constant use, but it does have the nice feature that it doesn’t stop every half hour. I’ll update my blog if I get the more expensive model and let you know how it works.

Anyways, that’s what I did! Don’t make the same mistakes I have!

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