I couldn't figure out how to set the light timer on my new microwave, so I read the owner's manual.  To my dismay, it appears that it is not an option on this microwave.  Seems like a very basic feature that every microwave should have.  My old microwaves have always had a light timer.  I'm disappointed that something newer would not have the same convenient feature.  Also, the buttons are too hard to push on the touchscreen.  You have to press them very hard to get them to respond.  Again, my old microwave had better button response.