Symptoms
- Steady or loud hum when start is pressed
- Drum doesn't move at all
- No heat produced
- Hum continues until you turn the dryer off
Likely causes
- CommonJammed or seized drum preventing the motor from turning itA stuck roller, foreign object, or broken part can lock the drum in place while the motor still tries to run.
- PossibleFailed motor start capacitor or start windingSome dryer motors need a capacitor or specific winding to start turning, and its failure causes humming without rotation.
- PossibleBroken drive belt allowing the motor to spin freely without turning the drumIf the belt is gone entirely, the motor may spin (sometimes with a different sound) without any drum movement.
- Less commonSeized motor bearingA motor with a seized bearing will hum under load but can't actually turn.
What to do
- Turn off the dryer immediately if you hear humming without tumbling, to avoid overheating the motor.
- Unplug the dryer before any inspection.
- Try to rotate the drum by hand with the dryer unplugged to check if it moves freely or feels jammed.
- If the drum won't turn by hand, look for an obstruction or broken roller/support inside.
- If the drum turns freely by hand but the motor still just hums when powered, this points to a motor or capacitor issue.
- Do not keep repeatedly trying to start the dryer while it hums, since this can damage the motor further.
- Have a technician diagnose whether the issue is a jammed drum, broken belt, or failed motor component.
Tools and parts
Dryer drive motorSearch: “dryer drive motor replacement”
When to call a pro
Have a technician diagnose a humming-without-tumbling dryer promptly, since continued attempts to start it can burn out the motor.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.