Hi Everyone.
I have a CR10S Pro V2 and the Z axis just started grinding during a print.
It is the right side having the issue. So I tried swapping the two z cables at the motherboard to see if the problem would move to the other side, but it stayed. So I’m guessing its not the stepper driver.
I tried unplugging one at a time from the board, the other side worked fine, this side would either make the noise or stop turning very quickly (after moving 1-2 mm).
I swapped the motor for a new one, same issue.
Not sure what else to try. Was thinking maybe it is the coupler? But any advice would be appreciated.