The interior light has gone out, but a replacement 60 watt bulb won't work. Does this have to be a special bulb, or is something else possibly wrong?
You will want to use a 40 watt appliance bulb instead of a 60 watt as the 60 will get hotter than the 40. When you do install it the bulb will get to a point where it feels like it is all the way in. If you turn it just a little bit more it should go in further. If you have one of the rubber jar removers, this works good for getting it all the way in place.