I was printing great when the Ender decided to keep running but not extrude any filament. It’s like it was printing on air. I assumed it was a clog and disassembled the entire unit to clean it, but it was clean inside. I replaced the nozzle anyways. Still no filament. It appeared the motor to extrude was not turning (I placed a small mark on it with a Sharpie), so next I assumed the motor was bad. I purchased a new Sprite Extruder and installed it. Same issue. I tried a new roll of Creality PLA as well. I can manually push it through when heated, but it won’t print, even with a new extruder, hot end, and nozzle. I’m beginning to think it’s the daughter board as I have tested all the cables. I’m almost to the point I don’t want to throw more money at it. Thanks for any help or ideas.
Had the same issue with my old s1 pro. Turned out to be the ribbon cable was faulty due mainly too the continue flexing. Replaced the cable and all worked OK.
Bill