Grundig Unstable Power Supply or Loose Connection

Display or indicator lights flicker or dim during operation.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Weak mains supply, Loose power cord connection, Failing internal power supply, Oxidized connectors on control board

Safety first: Unplug the machine before checking connections.

Try another outlet: Connect the coffee maker directly to a different wall outlet without extension cords.
Check plug fit: Ensure the plug fits firmly in the socket.
Avoid shared high-load circuits: Do not run the coffee maker on the same circuit as heavy appliances like kettles or microwaves.
Service if persistent: Internal power supply issues require professional diagnosis and repair.

Medium 3/5

Internal Power Supply / Control Board Connectors

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