Output Chip blown, need help!

Question

The output chip on my P4800MP is blown - everything is connected correctly, but there's no sound. I am technologically knowledgeable, but have never worked on a car stereo before, so two questions:First, what output chip does the P4800MP use?And second, where might I find out how to install a new output chip? Or, where might I find a hardware layout for the P4800MP?