ApplianceField Lab
Field evidence

A Fourth Hall Sensor and New Harness Ended the Jerking

The washer moved after a board and Hall sensor, then jerked. A new stator did not solve it. Operation returned only after another Hall sensor and the sensor harness were installed together.

LG Jerks Or Will Not Spin

What each replacement revealed

  1. The drum initially rotated poorly and the control board later failed.
  2. A board and Hall sensor brought movement back, but it was jerky.
  3. A new stator and sensor produced no rotation.
  4. The older assembly could move only after a manual push.
  5. The drum had no reported bearing play.
  6. A fourth Hall sensor and a new sensor harness were installed together, after which operation returned.

A similar symptom can have a different cause on another direct-drive washer. This result supports the Hall-feedback circuit in this appliance, not the harness alone or automatic part replacement for every jerking drum.

The direct-drive motor assembly revisited after board, Hall-sensor and stator work failed to restore normal movement.
The direct-drive motor assembly revisited after board, Hall-sensor and stator work failed to restore normal movement.

Why the sensor still needed inspection

The discussion also raised two installation variables: a Hall sensor can be seated outside its groove or not fully latched, and replacement sensors can be defective. Multiple sensor attempts in this case made connector fit, harness continuity and part quality more important than another stator guess.

What to preserve for diagnosis

  • Record whether the drum jerks, hums or moves only with assistance.
  • List the exact board, stator and sensor parts already installed.
  • Note whether the symptom changed after each replacement.
  • Have connector seating and the harness checked before another motor assembly is ordered.
Electrical and mechanical safety: do not push the drum during an energized test or probe motor feedback circuits live. Disconnect power before rear access.
Unexpected turn

A repair that did not follow the obvious path

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