wont bake

maytag mew5527ddw wont bake, when you push bake button no codes or any temp pops up on sreen seems to work on all other push pad functions EXCEPT the light button ,when you open the door the light comes on but not when you push the light button it does not turn on the light… No error code comes up broil works , is this more of a touchpad problem or a electronic control ? I have a tech sheet I cant get it to go into Quick test . any help ?