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SKR Mini E3 V3.0 suddenly can't reliably control the extruder

Joe Kyle

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I upgraded my printer with the SKR Mini E3 V3.0 a few weeks ago, and it was working without an issue. Suddenly, it can't reliably control the extruder. Sometime it will extrude properly for a bit, but then reverse and retract despite not being called on to retract - this occurs during printing and when commanding the extruder manually. The extrude and retract seem to run at different rates, despite sending consistent G codes with the same distance to move, and again, sometimes reversing in mid-move.  Only the extruder seems to be affected, X, Y and Z moves seem fine.

Any ideas? Could this be a stepper driver issue specific to the extruder?

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