After switching on, the pump starts briefly, but no flushing or water is delivered. The display is dead. The backlight is ok. If e.g. the control button for a cup is pressed, something seems to react briefly. The brewing unit is stuck. I have removed the housing completely and checked the plug connections. However, everything seems to be in order here. It is possible that the power board is defective. Does anyone have wiring diagrams or are there measuring points on the board to check ? Possibly there are also other causes. I am grateful for any tip.
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