Can you remove the filament and see if the motor turns freely with no load. I tend to draw a sharpie line on motor gears and shafts as a visual indicator.
Use a multimeter to check continuity  in both  phases of your stepper  including the cable also make sure the contacts in the connector are not pushed in.  You can still have good continuity but have a bad connection. I had this happen with a thermistor.

Remeber remove all power from the board before disconnecting or connecting components.

Tin

Yup, great tip. A Sharpie line on the extruder shaft and gear works great. You can see if the gear is slipping on the shaft, and how much retraction is happening. Also for light coloured filament I put the occasional Sharpie mark on the filament. Easy to see if it is moving into the print head properly or jammed.

I could also be the motor itself.  I've seen plenty motors that can turn freely as long as there's no load, but once you put a load, they can't do anything.

So, if the motor turn freely without the filament, grab the extruder gear by hand, and see if it stops.   You shouldn't be able to stop it easily, but if it does with the slightest pressure, then you might have a bad motor.

A bad motor is incredibly rare. Most likely the VREF is too low on that axis. If raising VREF doesn't help, it is more likely to be a bad driver. Although those SD PRESS extruder motors have had some issues with the wiring, it's easily fixed and you shouldn't have to replace the motor.

So, if the motor turn freely without the filament, grab the extruder gear by hand, and see if it stops.   You shouldn't be able to stop it easily, but if it does with the slightest pressure, then you might have a bad motor.

Remeber remove all power from the board before disconnecting or connecting components.

Tin

pirvan wrote:

What is your hot end temperature?  Sounds like your filament is not getting hot enough to be extruded, and the motor is trying to push it through but can't.

Look at the extruder, it makes back-and-forth movements. Generally, when it happened to me, it was because a bad contact.

I am leaning towards something like this.
Any clues on how I can figure out what ti is? If it is a bad contact, what are my options?

What is your hot end temperature?  Sounds like your filament is not getting hot enough to be extruded, and the motor is trying to push it through but can't.

I am at about 240 I believe, it is hatchbox filament that I have used many times before so I doubt its that. When I heat up the extruder and just try to push it goes through smoothly.

What is your hot end temperature?  Sounds like your filament is not getting hot enough to be extruded, and the motor is trying to push it through but can't.

Look at the extruder, it makes back-and-forth movements. Generally, when it happened to me, it was because a bad contact.

Any suggestions?

Thanks!

https://www.youtube.com/watch?v=MCirUKV … e=youtu.be