Not necessarily. Some controls are hidden or change display state when the door closes. The exact model's status indicators need to be understood.
Understanding this situation
A deliberately concealed display is different from power loss, a tripped circuit or a programme that fails to start. Do not judge operation solely from the absence of visible numbers on a closed furniture door.
A useful next step
Use the normal instructions and any provided floor or sound indication. If a new unexplained loss occurs, record the programme and other symptoms. Do not remove the furniture panel or reach into live controls to check power.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.