I have an Ender 3 that suddenly starting having an issue. The X-axis belt randomly stops moving when extruding the first layer. It doesn't always stop at the same exact spot, but once it stops, the only movements that are made are back and forth Y-axis movements.
I am able to freely push the carriage back and forth and there does not seem to be any binding. The printer has no issue performing auto home. I've checked all cables multiple times, on the external side and the internal side. The motor does not seem to be very hot if even warm at all. I've even tried swapping SD cards with a known working G-code/printer.
The only thing I haven't tried is swapping out the motor which I can't at the moment all my printers are busy, however, all the threads I've read mention the motor failure is the least likely answer. I'm not sure what would have caused this. All I've recently done is install a new cartridge and thermistor, and everything was working totally fine until I re-leveled my bed a few hours ago, and when I started a new print after leveling this started happening, and was giving me no issues prior. I can't find any similar threads, so I feel pretty hopeless right now.