I have an old Ti/400 that I still use on a daily basis. It works great, but I have a problem that's been plaguing me ever since I got the thing: the power cords. I just bought my fourth. The first and third broke at the place where the cable meets the plug which goes into the PowerBook itself. The second one died when the prong on the cable actually broke off inside the PowerBook (which led to me having to send the whole thing in for repairs), but its cord had begun to fray at this exact same point, so I don't believe it would have lasted for much longer anyway.
Power adaptors cost about $80 each, and have since The Beginning. Do the math, and you can see why I'm interested in seeing if I can get my fourth and newest power cable to last for more than a year. Does anyone have any tips?