I purchased a composite mod on ebay for my 2600 a few years ago. I thought it was OK, but I am now noticing weird beeps and stuff when a game is not playing. They are faint sounds but you can hear them. Also , some sound is loud and some is faint. For example when playing 8K pac-man, and Pac-Man dies, that sound is noticeably fainter than the other sounds. I am going to open up the machine later tonight to see if I can spot anything obviously wrong, but any tips before doing so is appreciated.