Sometimes. I realize that the arduino and some lights are powered from the usb. The problem is definitely the switch. The 19V power stays on continually unless I unplug it. The switch doesn't even feel like its working, ie. I don't feel a "click" when I switch it anymore.
Someone replied to this problem a couple of months ago, but I lost the message. I think it has to do with how the switch is mounted on the board or something.
Is your Ultimaker USB port plugged into a computer when you switch it off?
I say this because mine is partially powered up through the USB port regardless of the power switch status.
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