SOLE F80 Treadmill Motor Controller Clicking

Motor Control Board

The clicking sound is the mechanical armature of the power relay on the board rapidly engaging and disengaging. This 'chattering' occurs when the control logic detects an internal short in the PWM drive MOSFETs or an over-current condition from the motor, triggering a safety loop. Replacing the board restores the switching logic and power rectification necessary to drive the DC motor.

SKU: 008137

Drive Motor Carbon Brushes

Worn or 'pitted' carbon brushes create excessive electrical noise and irregular resistance across the commutator. This instability can cause the motor controller to struggle with current regulation, leading to the relay clicking as the board attempts to stabilize the power output or trips on a momentary surge.

Treadmill Walking Belt

Over time, the friction-reducing wax on the underside of the belt wears away, significantly increasing the mechanical load on the motor. This creates a high-amp draw environment that exceeds the thermal limits of the controller's MOSFETs, eventually damaging the board and causing the relay-click failure mode observed by the user.