A very quick Gooogle search throws this up:
https://youfixit.eu/en/miele-pcb-el140-el150-repair.html
https://youfixit.eu/en/miele-pcb-w700-repair.html
There may be more but you should be able to search for things like "Miele power board" and "miele power board repair" yourself, just like you did earlier.
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November 2017