A garbage disposal humming without grinding or working indicates that the motor is powered, but a mechanical jam is preventing the flywheel from spinning. Common jamming culprits include peach pits, bones, bottle caps, or silverware wedged between the impellers and the shredder ring. Callout type="warning" title="Electrical Safety Warning": Unplug the unit before servicing. Insert a hex wrench into the bottom motor socket and rock it back and forth to dislodge the trapped item. Verification: Turn on cold water and flip the wall switch to verify smooth motor rotation.
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