I only have one z-axis motor port working on my board. When searching the forum, it became clear that this can happen with some boards. I just assembled the router (4.1) and tried to go through the calibration process.
This is what it looks like: https://youtube.com/shorts/YWk8v_e2f1A
@bar seems to be the one handling this. How do I proceed best?
Raise the Router until it off the Z motor screws to ensure it not jamming one side. you can wind them up manually if required.
First prove the fault into the control board or not by swapping the Z connections. If the fault follows the port it is likely a faulty control board. Which you have done, so you will probably need a new board. Some people have had some success resoldering the board, but not everyone.
If both ports work with no load then it could be an alignment problem, either where the Z nuts are mounted or the Z motors themselves. Try loosening the screws a little for the Z nuts first. If you can then move the router onto the threads, tighten the screws holding the nut.
If you still have a problem it could be the screws that are holding the Z motors. loosen them off and run the Z right down, then retighten them.
Thank you, one is indeed a bit tight. I will loosen the bolts a bit.
The problem is that only one stepper port is working. Is there a tutorial on how to re-solder the board? It could be that only the motor’s power supply is affected. Is there a schematic/pictures of which controller is responsible for the stepper? If so, I could try soldering.
Unfortunately that was a pretty common issue with one batch of the Kickstarter boards. I will DM you a code for a free replacement right now.
I’m sorry for the trouble!