Geeetech

Ok.

Thank you William!

Yes, William

Hello,

1-The hotend (extruder) temp was 275ºC.
2-Yes, i did mesure the volts of the new driver: 0.865v.
3-You're right. The extrusor motor doesn't rotate. I put a point in the motor axis, in the opposite side of the fan to see if motor rotates but it doesn't. I removed the pipe from the extrusor ...

Hello William,

Yes i´ve tried all the solutions.

Yesterday, i bought a A4988 new driver and i put it in the extruder1 motor driver place but the extruder it´s not working yet.

I think is possible a problem with the Marlin configuration or the board is damaged...

I look in the Marlin´s place ...

Hello, my problem is that the extruder don´t moves the filament. I read the instructions in this page and i change A4988 driver of the extruder 1 by the driver of the extruder 2 (in the driver of the 1 the volts between screw and gnd was 0. In the driver of the 2 was 0,85 v) (I prefer not to change ...