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Old 10-16-2020, 07:55 PM   #10
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Default Re: Treadmill Motor Control Board 032669-IF

Well it is almost never the motors, but check those anyway before partial reassembly, this can most easily be accomplished by measuring the dc voltage the motor generates when rotated by hand since they are almost certainly permanent magnet dc motors.

An oscilloscope and function generator will be useful for testing relays once removed from the board, the LED's are mostly status lamps that indicate which motors are active, I believe there is a voltage status led there as well. I would stay away from the logic for now as this is rarely an issue, from a brief examination of your board I see no obvious defective capacitors this generally does not mean much as they don't always fail in a visually obvious way.

Anyways let me know how you get on.
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