LONGER3D LK4 Pro -- Stopped Feeding Filament--Nozzle NOT Clogged

[curious aardvark]

yep i concur, either a looses connection - check the stepper lead and connectors.
Or it needs a new driver.

If you are lucky the board will use removeable drievrs, which just involves removing the faulty chip and plugging a repolacement in.
stepper drivers are just a few quid/dollars - so as with most 3d printer issues. faster and less hassle to just fix it yourself :-)

[lothian]

It seems the exact problem I experienced with this LK4 Pro 3D printer is rather familiar to LONGER: They made a video to t'shoot it...



I swapped the extruder and x-axis stepper cables as demonstrated and performed the respective tests--everything tested OK. I returned the cables to their appropriate connectors and ran the printer non-stop for 48hrs without a glitch. Perhaps a connection was loose; perhaps one or more male/female cable/motherboard connectors are intermittently faulty; perhaps there is a small break in one or more wires within the “E” cable (Maybe it'd be prudent to replace the cable that powers the extruder stepper motor.)

The problem seems to have disappeared... hopefully for good.