extruder motor in i pro c not working

[zhangxueyou]

Is 0.58 got from A4988(the voltage between screw on A4988 and GND)?
How is it when you exchange extruder motor driver with x motor driver(A4988)?

You can control both extruder on Repetier-Host, referring to this page:
http://www.geeetech.com/forum/viewtopic ... 21&t=16512

yes I did all this but no use any idea how to check if the gt2500 board is dameg in extruder motor connection area

thanks

That voltage can be raise by rotating the screw slightly.

[Ahmad2015]

yes I try it but nothing change

[zhangxueyou]

Please contact the customer service.