Proform XP 620 - Speed constantly returns to 0 while the treadmill still runs


I have a Pro-form XP 620 and recently while running on it, after about 25 minutes the belt just stopped.

I smelt something strange for a second but it went away (it didn't really smell like something burning).

I unplugged the machine and waited for a bit. After plugging it back in, it was working again but I noticed the speed reading on the display always changes back to 0.0 after a few seconds, but the treadmill continues to move.

I tried checking the circuit board, cables and tachometer, but everything seems to be fine.

Has anyone else experienced an issue like this?


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