Does the problem appear to be with the motor itself, or is just the computer display acting up? Do you keep the treadmill in a relatively cold place in your house?
I keep my treadmill (same exact model - Pro-Form 750CS) in an unfinished basement, and when it gets too cold down there, the unit won't start...has nothing to do with the motor, just the computer that controls the motor acting up.
If I set up a space heater to warm up the computer console (note again: the computer console, not the motor), the unit operates properly.
I know it sounds stupid, but it took me three years of fighting with the machine until I figured this out and it works 100% of the time.
Hope this helps.
Alex
February 2007
Mine is ten years old and start quitting on me during runs. Talk about ruining a good run! It would start working after a few minutes but still very frustrating. I ordered a new circuit breaker/reset switch, which is the same button I was pushing to reset the treadmill after it stopped. I ordered the part online from the Treadmill doctor at http://www.proformtreadmillparts.com/. The part was like $15 plus shipping. Easy to install, just removed a few screws underneath the treadmill slide off the 2 wires, snap out the old part and install the new circuit breaker. It’s been 3 weeks and about 12 runs and the problem seams to be corrected. I was thrilled; I was ready to buy a new treadmill. Now I can save my cash, cha-ching. Good Luck.
Patrick
January 2007
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