Unexplained crashes / stop mid-print
I replaced my MK3S V6 print-head a week or so ago, recalibrated with a new 0.4mm nozzle (xyz, first layer), but didn't make any big 0.4mm prints. I then switched to a 0.8mm nozzle and had some issues getting a good first layer, so recalibrated (xyz, first layer, extrusion width) with the 0.8mm nozzle. A 3"x3" first layer test printed fine, as did a 2" extrusion-width calibration cube. I then started a large (most of the print bed covered) print using MatterHackers RYNO filament (same filament used when calibrating). The print has some support material on the outside in places. Started printing fine, got up to about 11.5mm height, and then just stopped. The screen went to the announcement it makes when you first power on. There was no indication of any way to recover; the only thing it seemed like I could do to gain control was to stop the print. I had this happen previously and thought it was a fluke. Checking "Last print failures" it shows no power failures, one filament runout (I replaced filament during the second layer), and "Crash X 0 Y 0" which I believe means no crash was detected. The nozzle was clean, but left a blob immediately below it because of stopping.
Has anyone else had anything like this happen? Is this likely some bad g-code? If so, is there a way to check it?
I can post the gcode if that would be helpful.
RE: Unexplained crashes / stop mid-print
It doesn't appear to be a gcode issue. I backed the firmware out to 3.13.1 and it failed in a different place, sooner. It feels like a random power glitch, the printer just stops and reboots. It's on a UPS and all the computers stay up, so I don't think it's external power related.
This has the feel of a loose/poor connection vibrating occasionally and causing a reset. First recourse: pull and remake every plug connection at both ends and while you have the electronics open do a visual check for burnt connectors which might have been loose and sparking.
Cheerio.
RE: Unexplained crashes / stop mid-print
I checked all the wires and cables, wiggled them with the printer turned on, and nothing showed up. More poking around the web indicated it might be a 3.13.x problem, so I backed out to 3.12.2 and got a good print. The good print is from a slightly different model, so I'm not 100% certain that was the issue. That said, I am reasonably confident 3.13.x is the problem because it showed up on each of 3 slightly different models. I was also going to try a different memory card, but not going to try that now.
Wiggling may have broken through any corrosion/dirt in the sockets - but a fix is a fix.
Cheerio,
RE: Unexplained crashes / stop mid-print
I'm having a similar issue after upgrading to 3.13.3, firmware crashes during print, nothing else is displayed. Has happened on every print after the update, I've only done 5 prints. Worked fine before the update.