[edgineer]

Inside light doesn't work. I can't find it. I read I might have to take the oven off the wall t o replace it. Can that be true.

[dcg9381]

Well.. sorta true. To do it correctly you need to take it down.
There's a post on the web with photos.
Basically you can do it with it on the wall.
Open over, remove top cover. Remove left most forward screw that retains another cover. Carefully bend it up (pretty flexible)..

Here you go:
GE Advantium Microwave Halogen Lightbulb Replacement (Do It Yourself): Bulb Replacement - Instructables - DIY, How To, home, tech