I just ran into an extruder issue I have never seen before, and it has me pretty well baffled. I’m hopeing that someone has seen this before and knows what it might be.
I’m printing a pretty standard part, when I notice that every 6th or 7th line of extrusion isn’t coming out. I figure it’s a loose gear or a missing tooth or something. So I do some troubleshooting and determine that the motor is turning fine for a few seconds, then it seems to loose all of its horsepower. it’s still trying to turn, I hear motor noise, it just doesn’t have enough juice. The gear, gear mesh, small setscrew, etc. are all fine. I can see the shaft, and the flat part isn’t rotating at all. The shaft itself doesn’t appear to be broken.
So i try a different motor, one that I know to be working. Same thing.
The fan on the controller box is working normally, and nothing major has changed in the last couple of weeks. I’m thinking it’s either a short in the wire harness, a fuse partially melted, or a rambo board issue.
None of the other axis motors are showing any signs of issues. i have more motors I can try on the extruder, but I’m pretty sure at least one of the two i already tried is functional. Nothing changed on firmware or controll software, and if i extrude direct from the LCD controller without being plugged into the computer it seems to do the same thing.
Any ideas? Has anyone seen this before? I’mhopeing it’s a fuse issue or a wire harness or something else I haven’t thought of, because I really don’t want to buy another rambo board.
Thanks in advance!