Hey everyone! I hope you all had a great holiday. I found this awesome site today, and I figured since some of you, like me, also like working with and fixing hardware, it would be worthwhile to share this wonderfully useful site I found.
audio-circuit.dk has service manuals from just about any manufacturer you can think of, so before you toss out that amplifier or head unit, look up the schematic! If you are proficient with a soldering iron and a multimeter (AND THE DETAILS OF ELECTRICAL SAFETY), there is nothing that is truly broken!