A solid amber status LED would indicate that their is a potential issue with the AirPort Express.
At this point I would recommend that you perform a "factory default" reset on the Express. Note that you may have to do this a few times to make sure that it "sticks."
If, after doing the reset(s), the LED is still solid amber then the Express may be faulty. Unfortunately, there are no user serviceable parts for self-repair.
Thanks much, I'll give it a try but I'm sort of lerry to reboot my base station, since nothing good seems to happen when I do this kind of stuff. Currently I have one Airport Express and my base station functioning well, but I had to replace this AE a while ago and the newer one I'm trying to repurpose is showing the same symptoms of being dead as the proverbial doorr nail
I'm facing a similar situation as well and am a bit lost about how to solve it.
I have an Airport base station that is functioning fine, and a time capsule that is extending the network from the base station and until two days ago had my AirportExpress (current edition - probably six months old) extending the network of the base station, working without any problem.
Now the unit has a flashing amber light and an error message in the Airport Utility that says the unit cannot extend the network. The unit is working however with Airplay...
I restarted the unit, which didn't solve anything and then restored it to default settings, which didn't work either...
Any other suggestions would be greatly appreciated...