airport express doesnt find new router

Hi rodriguito,

Thanks for using the Apple Support Communities! I'm sorry to hear you are having these issues with your Airport Express. I'm a bit unclear on the exact nature or scope of the issue you are describing, or your particular configuration, but if you are having issues setting up your existing Airport Express to work with a new router, you may find the information and steps outlined in the following articles helpful:

AirPort base stations: About AirPort base station status lights (LED) - Apple Support

Resetting an AirPort base station FAQ - Apple Support

Airport Express (2nd Gen) - Setup Guide (pdf)

Regards