Hi Donna

What you want to do is fairly easy, just take off the door, then the other two screws holding the front panel on and remove it. This will give you access to the motor control board.

Here is the service manual which will show you how in detail. Your model is an updated version of the basic Neptune 3000.

http://www.servicematters.com/m...ibrary/docs/16010061.pdf

The supplement at the back is an update for your model. See page 4-5 for details on how to remove the board. Also, I suggest you do as much of the testing/troubleshooting as you can from the supplement to try to make certain the part you are replacing is the right fix, as it is pretty expensive.

Good luck.