If flipping the wall switch produces absolute silence with no humming, clicking, or motor sound, the problem is typically caused by a tripped built-in overload protector circuit breaker on the bottom of the disposal unit, a tripped wall outlet GFCI, a blown house circuit breaker, or a faulty wall switch. When the motor overheats due to heavy grinding loads or a jam, its internal thermal reset switch trips instantly to cut power and prevent electrical burnout. Verification: Press the red reset button on the bottom of the disposal and test the wall switch.
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