Just watch out; you might not need the power adapter, but rather the plug on the computer might be loose. One way (but not definitive) to test, is to hold the plug in different directions; if it lights up when you hold it up or down or something, the connection might just be loose on the computer end. Also, you should unplug the power adapter from the wall; the 65W adapters will shut off as a safety measure if the voltage drops too much, as it can if it's on the same circuit as a refrigerator or some other similar appliance. If it is the plug, you'd have to send the computer in to Apple for service. Carlos Fernando Hernandez <nandoz at cln.megared.net.mx> writes: > Hi, > > Need some help, the powerbook of my wife have a problem in the power-in > plug. The light doesnt light up (green or ambar). A friend of mine > told me > to get from someone in US the plug. > > Im outside US, but have an address in Arizona where I can receive > stuffs. > > Does anyone of you can help me to buy this plug and maybe a battery > for my > wife's PB 550mhz? > > I will transfer you the funds through paypal. > > I'll appreciate any help.