Geeetech

Hi there.
I have A20M dual extruder (1 hotend). GT2560 v3.1 board. A4988 drivers.

The motor from E1 extruder stopped spinning while E0 extruder works perfect.
If I put motion on Extruder axis , the E0 will spin normally while this one will just try. You can feel it. The motor works ok.

I did the following testing:
-heated up PLA head
-tried E1 motor on E0 cable and working ok (motor works)
-tried E0 motor on E1 cable and not working (same as with its own motor)
-tested E1 cabling point to point.
-measured voltage in between the driver potentiometer and Ground on all Drivers and is between 1.03v and 1.1 volt on all of them.
-swapped drivers between E0 and E1 with no success. Same behaviour.

I don't think it's a firmware issue, since I never updated anything. It just stopped working.

Thanks. Any recomendation?

Hi，you can refer to this:viewtopic.php?f=19&t=17097
Hope to help you.

Yes, I did, I just can't go further.
I think might be a motherboard issue....

Thanks anyway. I will send a query to technical support.

Finally it was ME BAAAAD!
Somehow, after starting printing from the SD (before used usb cura), the mix would be at 100% on the machine. If you restart machines stays 100%:0%, that never happened before.

So finally, everything is back to normal.
Thanks a lot.

I am also having this issue, does someone have any solution for this? kindly share your views, thanks in advance.

We are also searching to solve this issue, If you can get any solution, please give me suggestions at https://www.thetechsurveys.com/jacklistens