A hum without normal operation may accompany a jam, a starting problem or another electrical or mechanical fault. It is not proof that the motor needs replacing.
Do not keep switching it on to reproduce the sound. Isolate the appliance through its normal accessible control and keep hands and tools out of the grinding chamber.
Give the model and whether it is batch feed or continuous feed if known. An engineer can assess obstruction, switching and drive behaviour before discussing a suitable repair or replacement decision.
A sink that drains badly while the disposer runs may have a downstream problem. A silent disposer with a freely emptying sink points to a different enquiry.
Read the guide ↗Food waste disposalAn A Brassett service label records the service connection; the manufacturer label identifies the installed product. Both should remain visible and unaltered in.
Read the guide ↗Food waste disposalWater can travel from the sink mounting or outlet across the body. The first wet point determines whether the enquiry begins at a connection or the unit itself.
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