My 3d printer has a problem.

The print head will move freely when at the front and middle of the heatbed but when it gets near the back the print head just sits there and clicks (fairly loud vibrating sound) as if trying to move, this is only when it is moving left or right. the forward and backwards movement is fine. There is a slight jolt when moving backwards near the back of the heatbed and this is when the printhead wont then move left or right.

sorted now it was a broken wire