[https://www.ifixit.com/User/2550976/Shannon+Barrett|'''++@soccermom034++''']
could be a control board issue as well as bad door switch and multiple things in between. Here are the instruction on how to check the different components
[image|1483455]
[image|1483456]
[image|1483454]
and here is the wiring diagram
[image|1483457]
Since you are certain your power supply is of proper voltage (make sure all your fuses/breakers are working for the outlet. Depending on where you are located you may require 220V on it), start with the diagnostics test as seen here and let us know what your display shows you.
[image|1483459]