GE spacemaker xl 1400, lights on bottom won't work

To Person who answered Best Solution above,
This worked nicely thank you.
After removing my circuit board the long silver strip was intact, however where it makes the turn about quarter inch, the solder or foil seam had a break in it which I filled-gap with solder.
My guess is if the "foil" or thin 2" long strip is serving as a fuse, it would still melt again even with my solder on the shorter section, in event of overload. Also seen on the plastic area directly behind where the circuit board would mount, and where the "foil" was blown, was a small blackened area as evidence of the blown foil. 2 new bulbs and all is well again Thanks!

There is not a fuse that controls the lights. What has blown is part of the control board. If you take the circuit board off and look at the back closely you will most likely see a long silver section with the middle blown out. I thought it was solder but it appears to be some kind of foil. If you are looking for a cheap and easy fix. Go to your local autoparts store and buy a small bottle of stuff they use to repair the fine lines that defrost your rear window on your car. It conducts electricity. Paint it on to fill in the gap and overlap onto the foil on each side. I gave mine a number of coats. You may have to trim up the edges of the blown foil a little. I also painted underneath the foil edge as well as on top to make sure I had a complete circuit. Do not use the lights for 24 hours until it dries. It does not appear to conduct electricity until it is dry. This worked for me.

HOW DO U CHANGE THE LIGHT BULBS UNDER THE SOPACEMAKER?

Does anyone know where the circuit board is located? Does the microwave have to be taken down to access it?