I have recently acquired a treadmill for free.
Original fault: Plug into 110V Non-GFCI 20Amp circuit, ON/OFF CB Switch to ON; belt goes to max for ~1sec then power resets and repeats.

Steps taken:
1. Unplug from wall outlet, open motor cover, check all terminals and headers, verified that they are seated correctly. Removed motor connections from control board, removed motor, pulled & cleaned brushes, visually inspected commutator. Reinstalled brushes, reinstalled motor and motor connections to control board. Reinstalled cover, plugged into wall outlet.

2. Power on, Console boots successfully, belt does not spin-up on boot. All buttons work on console, incline motor functions properly. Belt motor fails to spin while speed is set and distance indication increases. Turned off power switch, unplugged from outlet removed motor cover, removed motor dc connections from control board. Plugged in to wall outlet, set power ON, set speed to max on console, connect multi-meter to control board A+ & A- obtained reading of 0.0vdc. Shut down treadmill, unplugged from wall outlet.

3. Removed all control board electrical connectors, removed control board, removed control board from heat-sink tray, discharged C7. Started measuring resistance from DB1 and worked my way to the motor, I got an open circuit indication when I measured across R21.


I have called Icon and asked about a circuit diagram, they directed me to the block diagram included with the treadmill, I made it clear that I needed to get the resistance values. I don't recommend calling Icon/Nordictrack if you need technical answers.
View attachment 187659 View attachment 187662 View attachment 187663View attachment 187678

I replaced R21, I thought I read the R21 bands as Green, Brown, Brown, Gold, and I was wrong. R21 smoked when I set a spped and pressed start, and R22 is now cooked and unreadable too. A high res photo of a correct model circuit board would be helpful if there are no circuit diagrams.

I have studied the reverse engineered MC2100 diagram that I found on this site, but I doubt it's accuracy for my specific model.

Hello all,
I'm a 76 year old retiree who is trying to stay out of a wheel chair. I bought a Pro-Form treadmill in 2014 and have been using it daily, last week my son suggested we put it outside under the carport. We did and he decided to hose off the running belt. Whe hi lifted the track to clean the water off the bottom I guess some water ran onto the circuit board because we heard a pop and a smell like burnt plastic. Yup it was still plugged into the extension cord. Well we took off the hood and saw that there were 4 components that were burned to a crisp. (HS1 - D3 - R51 - & C27) I'm thinking is I knew the values of each of these items I maybe able to but them on line and replace them myself. So is any one out here can help in any way I thank you so much. You can email me at <snip>. any help would really be appreciated. Board Model# is MC2100LTS-30

 

I think I already answered that in a previous post, I will see if I can find it.
Otherwise I can dig a board out and get it.
Max.

Any help would really be appreciated. Board Model# is MC2100LTS-30

 

Hello Max i just recently change the IRFP250M and S4025I and and guessing that the fault is coming from the motor.
Motor is 2.75 HP, when i tested with 132 Pounds person everything goes good but i increase the charge with an 231 Puounds the IRFP250M shorted again

Any help would really be appreciated. Board Model# is MC2100LTS-30

 

I'm a 76 year old retiree who is trying to stay out of a wheel chair. I bought a Pro-Form treadmill in 2014 and have been using it daily, last week my son suggested we put it outside under the carport. We did and he decided to hose off the running belt. Whe hi lifted the track to clean the water off the bottom I guess some water ran onto the circuit board because we heard a pop and a smell like burnt plastic. Yup it was still plugged into the extension cord. Well we took off the hood and saw that there were 4 components that were burned to a crisp. (HS1 - D3 - R51 - & C27) I'm thinking is I knew the values of each of these items I maybe able to but them on line and replace them myself. So is any one out here can help in any way I thank you so much. You can email me at <snip>. any help would really be appreciated. Board Model# is MC2100LTS-30

Mod note: remove e-mail address to prevent web bots from harvesting it.

 

It would be helpful if you posted a well-focused picture of the components in question.

 

It would be helpful if you posted a well-focused picture of the components in question.

I thought I did, but since they are burnt it's going to be hard to determine what values they are..Thanks so much for your help.
P.J.

 

D3 = GZ87
HS1 = G5551
R51 = BROWN,GREY,BLACK 18Ω
C27 = 221K

 

D3 = GZ87
HS1 = G5551
R51 = BROWN,GREY,BLACK 18Ω
C27 = 221K

Max your the best, any idea where I may purchase these from?
Thanks so much for your help
P.J.

 

If in N.A. Try Digikey or Mouser. ET-AL.