Important Safety Information: Turn off your Gigabot and disconnect its power cable from the outlet during the removal and installation processes.
In the photo below, outlined in yellow, are the DRV8825 motor drivers for the two types of control boards for Gigabot. To replace one of these motor drivers, gently grip the red heat sink and pull straight out, thereby removing the circuit board. Next, insert the replacement motor driver carefully -- make sure that all of the pins, on the top and the sides, are going in correctly and that it is fully inserted.
Azteeg X3 Pro:
Azteeg X3 V2: