forgive me if I was unable to locate a thread with someone else having a similar problem.
my Mini started failing in startup/bed leveling. Once it gets to the part of the startup sequence where it probes each of the corners, the print head never descends but rather ascends at each corner, and sets it’s initial z-height at that far height about the bed, making it impossible to do any prints.
This happens on .gcode that was successful in the past, always with the same result, and I’ve tried all sorts of things short of swapping replacement print head. This is a Lulzbot Mini, with a v2.1 extruder head.
here is a youtube, as a video is worth a thousand pictures, or something like that
trying embed too
The symptoms suggest to me that perhaps there’s a “short” (always closed) in the continuity/level point sensing? but I do not know what to do with that.
I would be grateful for suggestions or next steps.