You might want to check the bulb to see if it is indeed burnt. I went and replaced mine only to find out it was not burnt at all - rather some other problem. - The switch still works fine and turns the lights on & off , however the small bulb sucket in the center - that illuminates the different functions of the switch is not functioning anymore.
Not sure how to repair it - or even what/where to look for...
Good luck and let us know.