At first I tried to use pliers to unscrew the base,very uncomfortable working position,upside down and backwards(the microwave is installed over the range top)very limited space for your body and arms to manuver and you really cant see the base,all of this took place after the breaker was turned off ofcourse,finally figured out that you can drop the entire bottom housing of the microwave by unscrewing 6 screws and the light sockets are easily accessable once you lower it,take out 1 retaining screw ,remove the entire socket and unscrewed the broken base and replaced the bulbs,I said bulbs,there is no sense in having to replace another bulb in who knows how long since only one had burned out but they were both the same age
UNPLUG REFRIGERATOR. Carefully remove relay from the side of the compressor. You shouldn't need a tool to do this, if it is hard you can gently pry the edge with a flat head screw driver just to loosen. Unplug white and red wires from relay, noting that the white wire goes in the hole with a #2 stamped beside it. Shake old relay, if it rattles like a baby rattler then it's most likely the problem. Replace wires into the new relay and plug back into the compressor.
Loosen screw holding glass cover plate in place over bulb. Glass cover plate will swing down. Unscrew bad bulb, replace with good bulb, reset glass cover and tighten screw.