The symptom narrows the next check
Garbage Disposal Not Working? Start with the Symptom
A garbage disposal that is silent, humming, leaking, tripping its reset, or draining slowly can point to different causes. The unit may be jammed or worn out, but the fault can also involve the switch, electrical connection, sink mounting, discharge piping, or dishwasher connection, so replacing the appliance before diagnosis can leave the real problem in place.
Turn the wall switch off and keep hands and tools out of the disposal opening. If you notice smoke, a burning odor, sparking, a hot housing, or water near an electrical connection, stop using the sink and leave the unit off until it can be assessed safely.
- Silent when the wall switch is turned on
- Hums without grinding or draining normally
- Leaks only while water runs or the dishwasher drains
- Trips the reset or circuit repeatedly
- Makes a new metal-on-metal or rattling sound
- Drains slowly even when the disposal is off


