G'day all

My wi-fi network consists of a Time Capsule router and an Airport Express to boost the signal. I changed the password for our network a couple of days ago and had to reset the Time Capsule. It has come back fine but I cannot get Airport Utility to see the Express unit. I have reset it and unplugged it for hours but it just won't appear.

Both the Time Capsule and Express are a few years old now but were working just fine until the password change.

Any suggestions?