Plastic cases often yellow over time due to flame retardants in the plastic, which is the cause of the sickly color. The Mac case was a originally a much more p

Plastic cases often yellow over time due to flame retardants in the plastic, which is the cause of the sickly color. The Mac case was a originally a much more pleasant beige than it appears in the teardown photos. For more info on case yellowing, see http://hackaday.com/2009/03/02/restoring-yellowed-computer-plastics/ http://hackaday.com/2009/03/02/restoring-yellowed-computer-p... Apple used to be much more open about their products. The service guide goes into great detail about how to disassemble the Mac - it makes the teardown almost redundant: http://tim.id.au/laptops/apple/legacy/macintosh_128k.512k.pdf http://tim.id.au/laptops/apple/legacy/macintosh_128k.512k.pd... A hardware note: the iFixit teardown points out the "74LS393 Video Counter" chips - these are just plain TTL binary counter chips, not special video chips, so I don't know why it's pointed out as notable. The 6522 Versatile Interface Adapter (bottom center) seems much more notable.