z endstop stuck or broken

[halex 1]

hello Doctor,

I hava an error message on an Ultimaker 2 saying : "z endstop stuck or broken" and that i shhould contact ultimaker support.

i started having problems last week, 3 prints in a row skiped a layer and ended up like a ball of hairs.

also started to make weird bang noises where i couldnd define where it came from, the bed falling down a few layers in middle of a print made me think of the Zaxis, i could hear like sand noise in the 2 big bars on z, so i opened from Under and cleaned them, also the two big ballbearing z.

i wiggled the bed to rebuild it the right way, hoping it would work.

That's when i got the error message "endstop stuck/broke" and it makes terrible noises.

I tested the endstop throught a circuit with a led, and the led goes on and off no problem.

could it be the board ?

I have a few clients waiting for their orders, please help me quickly.

[halex 1]

How çan I post a Video ? When i press the video icon it closes the webpage, I use an iPad