A shared power event can point to a different assessment from a dishwasher-only interruption. The observation helps distinguish the supply context without proving a cause.
Understanding this situation
Describe what was noticed at the same time and whether any protective device operated. Do not test multiple sockets or reconnect the machine repeatedly to narrow the fault yourself.
A useful next step
Leave unsafe equipment unused and obtain appropriate electrical advice where required. Include any dishwasher-specific leak, smell or warning. A concise factual account is more useful than assuming the control board failed because its display went dark.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.