Hi jdd122,
Thanks for using Apple Support Communities.
If one device is working and another is not it may be the other Apple TV.
For more information on this, take a look at this article:
Apple TV: Basic troubleshooting
http://support.apple.com/kb/HT1551
If you're not able to associate with a wireless network:
- Check the IP address Apple TV is using. If it starts with 169.x.x.x, then the router or base station may not be configured properly. Check to see if DHCP access is available or configure Apple TV with a manual IP address.
- If DHCP is available, go to Settings menu, select General then Network and Configure TCP/IP. Make sure the Apple TV is set to Automatic.
- Check for any obstructions and adjust the location of the base station and/or Apple TV if necessary.
- If security is enabled on the network, temporarily disable it on the base station and try connecting again.
You can also check the following articles to see if any apply to your network:
Apple TV: Troubleshooting wireless connections
Best of luck,
Mario