The presence or absence of a sound is an observation about the stopped stage, not a complete diagnosis. Either pattern needs the controls, programme and warning context.
Understanding this situation
A quiet machine may be waiting for an allowed action or delayed start; a hum may accompany several different processes. Neither permits safe conclusions about a specific electrical part, and continued humming without normal progress should not be encouraged by repeated starts.
A useful next step
Report the selected programme, whether the door locked and what happened immediately before the pause. Leave a machine with an unusual persistent sound unused until assessed. Avoid removing covers or trying to help a drum turn while powered.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.