After connecting my controller to my 360, it seems that I'm unable to get it to reconnect to the wireless receiver. Unlike before, when syncing the ring on the controller will rotate while trying to sync, then flash on and off periodically when it fails.
This makes me think it was never actually connecting to the wireless receiver in the first place, which is a different issue from the one I had posted earlier. I've tried various solutions posted around the forums for getting the controller to sync, but none of them seem to work so if anyone has any suggestions I'd be happy to hear them.
FYI, I'm using offifcial Microsoft-branded Xbox 360 controllers that came with the console. Only the receiver is a knockoff.