I have the keyboard and mustang pro guitar controller for xbox 360, and currently they won't remain connected to the system. They connect quickly, stay on for about 15 seconds, then disconnect. The other controllers I have (guitar, drums, controllers) all work.
I've confirmed that it's not the batteries, as the batteries work in other controllers. I've attempted to re-sync the controller to the console.
Any thoughts on what might be causing it?