A brief demonstration shows only what happened during that moment. It does not establish the condition of wiring, installation, maintenance, recall status or every programme.
Understanding this situation
Ask for the complete model and known history, and check official safety information. A warm drum or a turning motor is not proof that the appliance is suitable for your intended location.
A useful next step
Use appropriate assessment and correct installation before ordinary use. Do not rely on a seller's short video to dismiss a later burning smell, trip or abnormal noise. Stop unsafe operation and provide the history to the service team.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.