Over the weekend, we tought we had lost an audio cable and an S-Video cable in our family room A/V hookup - sound was getting distorted, and the picture was gone for both the DVD player and the Replay feed to the TV. As it happens, the audio cables did need replacing - one of them had problems. The video? Just loose.
However, there was still the standard fun of unplugging the cables and trying to figure out why audio worked for the VCR, but not for the DVD (or vice-versa). Mind you, it's a unitary DVD/VCR player, and why the output labelled "DVD/VCR out" plays audio for the VCR, but not for the DVD - while a separate "audio out" does play the DVD audio - is a complete mystery to me.
It's even worse than what a bunch of us talked about over the weekend, when we noted that no one could understand anyone else's A/V setup anymore. Heck, I have problems with my own :/