Hey folks, my PMA-2000R amp is not working anymore. So it has had some issues before where the input selector goes crazy while playing music, and it switches between all the inputs on its own until I turn the input selector. And then yesterday, the receiver won't output sound anymore. Before I would turn the receiver on, the red light would flash, and then I would hear a nice click, and then the sound would come out. But that click doesn't come on anymore. Does anyone know what the issue would be?