Geeetech

Apart from hardware aspect, you should consider if it is firmware issue, maybe the codes of firmware was not completely uploaded to mainboard.

So, I've just gotten the new gt2650. I bought a new one after the the one that came with the kit kept on popping its fuse. It looks stable now. BUT, I do have a new problem, The X&Y axes only moves towards home. I can disable steppers and move them a bit, hit auto home an when i try to move it agai...

1. How is it if you unplug x motor driver and plug it to mainboard again?
2. How is it if you swap x motor driver and y motor driver?

If the fan has only 2 wires, the order of connection is as shown in the following picture:

Is the temperature of extruder high enough?

Mine is starting to sag too, I noticed some splitting when installing, but it's getting worse, see image: http://i.imgur.com/WOtFtYM.jpg I'm printing a new one now, but the one pictured below one looks to have more support. I would really appreciate it if you could send me the better one, or provid...

It is normal that the diameter is bigger than the filament filament. Think about it, how can you feed the filament when the screw diameter is exactly equaled to the filament diameter.

No, the motor does not turn and I do not have filament in it. I have reloaded the firmware and it did not change anything. I brought the both extruders to 200c and the bed to 95c. If I press the manual move from the PC on either extruder, it echo I am sending the command. If I press the move too ma...

Have you raised the temerature of extruder?
Is the extruder motor moving with no filament when it's connect to extruder mtor slot?

When that one is fired, you should check if you connected something in the wrong direction.
It's not a big deal that the first M7 is fired, but you should be careful, don't conntect anything in wrong direction.