Prusa i3 pro W - not extruding I'm trying to do my first ever print with my Geeetech prusa i3 pro.

When I try to print that printer seems to work, x,y,z axis all moving ok.

What isn't working is that little to no plastic is being extruded. 

The nozzle appears to be getting to temperature, and some plastic comes out whilst it's heating, but then when it starts to move and print, no plastic comes out.

My thoughts are:


Have I not loaded the plastic properly
Is the extruder engine not working i.e. not pulling the plastic through


Any hints on what I can try would be appreciated.
Problem identified. 

I took of the fan and heat sink so I could see what was going on in the mechanism that should pull through the filament.

Using repetier-host software I tried to manually drive the motor - nothing happening.

I swapped the A4988 stepper motor driver for the extruder with another (and my x,y,z axis motors work) to see what would happen - and it worked!

So just a faulty A4988 on the extruder motor.

I also manually pushed filament through the hot end to ensure there was no blockage and it worked fine.

So hopefully GEEETECH can send me a replacement and I'm good to go!