I've replaced several of these. Any national electronics supply house has them - DigiKey, Mouser, Newark, etc. There's nothing special about them, just your standard lighted power switch that costs around $4. Try this link:
http://www.mouser.com/ProductDetail/Hammond-Manufacturing/1584S3/?qs=sGAEpiMZZMumryolnogYRn8MnysrUil8
Total replacement time is less than 10 minutes.
http://www.mouser.com/ProductDetail/Hammond-Manufacturing/1584S3/?qs=sGAEpiMZZMumryolnogYRn8MnysrUil8
Total replacement time is less than 10 minutes.