Does it go down when you send it up, or just stay put and make the crunchy sound?
You are probably skipping steps. What controller do you have? Did you get it from Ryan? It could be a wiring issue. Does the Z move smoothly by hand? And is the coupler tight?
So it’s definitely the connection at the mini Rambo. I repluged the z-axis. Tried it again in the z-axis worked fine but I must have a loose y-axis. The y-axis is now a chattery.
So definitely the connections at the board. I found I needed to press a bit harder, plus I added a small dab of hot glue on the plastic parts to keep it from popping out; something we do on servo wire extensions for rc planes.
I raised the z axis up a bit and ran the crown test and ran fine.
Wow, that was a few years ago. Looking back at my post I think it was simply that I didn’t have the connector on all the way and need to push them on more.