My wife has a Powerbook Duo 2300c that has quit working. The problem seems to be in the port where the ac adaptor plugs in. The battery no longer works at all and when I try to start it from the AC adaptor, the power will come on and off depending on the position of the adaptor in the port. I have tried a new AC adaptor and the problem is the same. I am wondering if the port can be easily replaced or if it is a complicated and expensive job. I don't even know how much the computer is worth. She uses it mostly for word processing and it has served her well. What are her options? Thanks for your help. Rich