Extruder gears

My extruder stopped working properly. Up until now I was able to use the extruder to print and do it from pronterface. Now when I try to hit the extrude button on pronterface the gears don't move. It is not a temperature issue because if I physically move the gear it extrudes. I am using a wades extruder with PLA plastic

Does the motor shaft turn? If so check the set screw on the small gear. If not check the motor wires. If it's still a problem swap the extruder to the X axis and see if it moves. If it does swap stepper controllers. If that's not it check the driver board connections.

Thank you i did that and my problem was resolved

If it was the set screws, you are far from the first one to run into the problem.....

I had something similar about a month ago.

The print would start OK, but after about 5 layers it would stop extruding.

The grub screw was loose on the extruder motor.

I guess perhaps as everything warmed up the plastic cog expanded and then it would start to slip. But it had me fooled for a while as I thought it was an problem with the stepper driver or the motor overheating