Extruder port stopped working

[jaapschaap]

Hi,

All was working fine, but suddenly (while i was printing) my printer stopped extruding.

This morning i wanted to test which part was defective. I tried to switch Y motor with the Extruder motor, and the Extruder worked from then on but Y didn't anymore.
It should be the board or the A4899 controller, to make sure i switched them but they all worked as expected, except when i used them for the extruder.

Any suggestions?

[zhangxueyou]

Your description is a little confusing.....
Here is my comprehension: After you swap extruder motor driver(A4988) with Y motor driver, the extruder motor can move but y motor can not.
If i am correct, I think the extruder motor driver is dead.

[jaapschaap]

I did tried to swap the A4988 with al others! But without luck.

The e-motor output doesn't work, not with an other motor driver and not with other stepper motor connected.

[zhangxueyou]

But the extruder motor can not move unless the temperature of extruder is more than 180 degrees.

[jaapschaap]

I think i had preheating activated @200C, but to be sure i will check when i get home!

If it is the A4988 there is no plroblem, cause i have lots of spares!

Thanks for support so far, i will report back later today.

[jaapschaap]

It was indeed the motor driver! And the min. temp requirements were indeed the troublemaker in my quick test this morning!

Still weird that it stopped halfway on a printjob, but i use little higher temps now so it won't go beneath 180 degrees

[zhangxueyou]

Maybe the commucation between printer and computer is shut down for some unknown reason. You can try to print off-line with SD card, I think it won't stop printing in the half way.