Miele Novotronic Premier Plus not working

8 May 2005
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United Kingdom
Hi all,

Our Miele washing machine stopped working a few weeks ago - no lights came on. A quick search suggested the door lock switch. This was changed and the machine worked again for 4 washes. On its last wash it stopped part way though. It has the same symptoms as before - Power to the on/off button but no lights on. I have tried wiring out the door switch but still no life ( I linked live and common). There is no smell of burnt out components.
How do test the door switch / wire it out properly. Any other ideas on what to check?

Machine is approx 20 years old and I am loathe to buy another second hand door switch without being sure it will work again.

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I checked the supply using a multimeter. 240V at the on/off switch and when on, 240V at the door switch.
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Just checked - last post is incorrect. I can trace 240V going to the main control board. But no power coming back from the board. What signals does the main board need for it to supply 240V to the door switch?

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