This video covers how to replace the power cord on the PC-7424XP with a longer one. If you are one who has VERY LITTLE patience, you may want to allow someone who is more electronically inclined to do it for you. Also, if you are one who doesn't believe in taking pictures of stuff as you take it apart, YOU are going to be in for a LONG night.
http://www.youtube.com/watch?v=dP5v6YG3hkg
