Is my power supply going bad?
Recently, I've discovered that if I plug my power supply into the wall, the tip lights up for about 5 seconds, then slowly fades. When this happens, the iBook suddenly stops charging. Am I looking at a bad power adapter or a bad DC-input jack? I notice that I can here a faint hum from the power supply- but I'm not sure if that's the natural hum or a bad one.
Okay, so here's an update- I found out that the power supply I receive with the machine is a 45W adapter. Apple's online kb articles say the iBook is supposed to have a 65W adapter. However, I've been using this power adapter for nearly a month, and it's never been problematic until just yesterday. Does my iBook need a higher wattage adapter to function?
Thanks to the comments below, I learned that either a 45W or 65W adapter will work. Having nothing to lose, I cracked open my power supply. I've found that my iBook will in fact charge with the cover off the adapter. When I press everything together, I hear a faint hum, and it turns off. I'm pretty sure that something somewhere is shorting out by touching something else when it's all put together.
Does anyone have any clue as to what could be shorting out?