Tefal Voltage Drop / Electrical Instability

Display or indicator lights flicker or dim during brewing.

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 internal connections, Failing power supply components on PCB, Overloaded circuit

Safety first: Unplug before internal inspection.

Steps:

Check mains circuit: Avoid running the coffee maker on the same outlet as high-power appliances (kettle, microwave) simultaneously.
Inspect cord and plug: Replace if signs of overheating or looseness are present.
Internal check (advanced): Inspect PCB for bulging capacitors or burnt components in the power supply section. Replace the board if damaged.

Hard 4/5

Main Control PCB

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