You’re welcome. I hope you’ll get a quick answer.
The zenerdiodes DZ4, DZ5, DZ6 should not be on the motherboard. You board is correct if they are NOT there.
Please do not order these as a spare part.
If your board is damaged, please contact supportatvellemandotbe to arrange a replacement.
Old topic but i have exactly the same issue :
Autohome is correct execpt on Y axis where it goes on the wrong direction.
Could you fix up your pb ? How ?
Thanks a lot.
g.
The main reason is a faulty end-stop (usually they work but there can be a bad connection somewhere or the end-stop is dirty - mostly with oil from the rods). So clean the end-stop with a cotton bud and check the wires. You can also try swapping the end-stop with another one to see if the issue moves with it.
If you changed the firmware did you use the Arduino software 1.0.6?
It seems later versions do not work well with the Marlin firmware.