Tassimo Stuck Start Button or Control Logic Fault

Machine starts brewing as soon as it is powered on, without pressing the start button.

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

Start button physically stuck, Shorted button contacts on control PCB, Control board failure, Liquid ingress into control panel

Safety first: Unplug the machine immediately if it behaves unexpectedly.

Dry control panel: If liquid was spilled on the panel, leave the machine unplugged and allow it to dry for at least 24 hours.
Check button movement: Press the start button repeatedly to see if it feels stuck or mushy.
Clean surface: Wipe the panel with a dry cloth to remove sticky residues.
If auto-start continues: The control panel PCB or main board likely has a short and must be replaced by a technician.

Hard 4/5

Control Panel PCB

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