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.
sdfdsgfds, November 2017