My appletv is showing no signal strength yet my internet is fine on all other devices. PLEASE HELP!!! I want to airplay yet the icon is not there and I think this is the result of the 0 signal strength.
That would be due to your local network. Make sure router is up to date. Go to istumbler (Mac) or netstumbler (PC) to get a report of your network and see if there's interference. If on wifi try ethernet.