Hi John,
Thanks for Your reply. I do have a multimeter. The mill is out of warranty but i opened the site of the mill and found the controlboard and i have seen the potmeter. I think there is something wrong with the potmeter, i saw black sud under one connector, so i wil check that tomorrow. Maybe a new connector could be a problem solver. Otherwise i order a new potmeter from Amadeal.
Regards,
Jan,