Is there a sure way to determine if the board is booboo or not? It does seem to work mighty fine otherwise and the problem is in all 3 endstops. I dare say the board is fine. There is something "small" im missing but i cant ficure out what.

Considoring i have a BIG pile of burned 8bit boards and they all are made by you-know-what, i do see your point too…

Any linksy to EU site selling the original smoothieboards? I'm willing to invest.

Well, you can always try upgrading your firmware and config file examples using the ones at smoothieware.org, but I don't think it'll help. Small chance though.

To get a smoothieboard, follow the big button on the smoothieware.org homepage.

I had this same problem and the solution is to supply voltage straight from the + side of your dc power to the board to the brown "V" wire for each of these endstops. These endstops are NPN type proximity sensors and will need 12 to 30 volts to work. My MKS V1.4 supplied 5V which worked for some reason but on the Smoothie V1.3, the V pin on the endstop plugs only outputs 4.78V which just won't allow the endstop to operate properly- the led just lit dimmly. Once I pulled he brown "V" wire loose from it's white three pin connector and supplied 24volts to it, it began sensing normally again.