A humming sound with no spinning blades almost always means the motor is getting power but something is physically blocking it from turning.
Fibrous foods (celery, corn husks), bones, fruit pits, or utensils that fall in unnoticed can wedge the impeller in place. The motor still tries to run — producing the hum — but the blades can't physically turn until the obstruction is cleared.
Most disposals have a small red reset button on the underside of the unit that trips when the motor overheats or overloads. After clearing a jam, this button often needs to be pressed before the unit will run normally again.
With the disposal switched off and unplugged (or the breaker off), many models have a hex-key opening on the bottom where an Allen wrench can be used to manually rotate the impeller and work a jam loose. Never reach into the disposal chamber with your hand, even when it's off.
If clearing a visible jam and pressing reset doesn't resolve the humming, the motor itself may be failing, or there could be an electrical issue upstream of the unit. Repeated jams in the same unit can also be a sign it's nearing the end of its service life.
A disposal that keeps jamming, won't reset, or hums without any obvious blockage is worth having looked at rather than repeatedly forcing the reset button, which can shorten the motor's remaining life.
Disposal humming and won't spin? Call us at (971) 386-1515 — we're available 24/7.