It's pretty simple as long as you have an offset phillips
screwdriver...
Of course, be sure to disconnect power to microwave and be sure not
to touch the new halogen bulb with fingers.
STEP-BY-STEP:
First, remove upper vent panel and remove inner filter (same directions
for just replacing
inner carbon filter):
Then, remove inner
plastic grille (2 screws) and final screw on left
side of metal "air duct" - here's where you'll need the offset screw
driver (and a little patience!):
Then, you can gently lift the sheet metal panel, find the light
housing, squeeze and remove/replace :)
That's it...just replace bulb and reverse for reassembly. Be
sure to keep track of screw locations there are various sizes/lengths
used.
Doug