Laptops R us

We've had some trouble recently, with Cairngorm refusing to charge. All I've ever seen about iBooks told me they were not user-serviceable, nor are they supposed to be service centre serviceable. I thought the poor little bugger might be done for, but I did a bit of googling and I found a site called www.ifixit.com. They had lots of shiny pdf guides for fixing iBooks and powerbooks. I found one for replacing the DC-in board, which is a teeny tiny bit that essentially consists of a power socket, some rectifying circuitry (as far as I can tell) and a bunch of pins. The pdf was long and scary looking. It basically told me to take the entire laptop apart. The screen comes off, the keyboard comes out, the modem board comes out, somewhere in the region of 20 different screws have to be taken out, stored safely somewhere and then put back, the plastic top of the laptop *clips* out (hard, but bendy plastic, clipped together; there are screws, but they don't do a lot structurally)... The plastic bit was the most scary prospect. I had visions of getting it partway out and ending up with a plastic tab in one hand and the rest of the top in the other. Anyway, I ordered the part and printed out the pdf. It arrived a couple of days ago, but I wanted to wait until I had plenty of undisturbed time to look at it. This evening I held my breath and started. The hardest part turned out to be finding enough distinct places to put the screws so I knew what went back where. The guide was brilliant. I think it was roughly an hour's job end to end, and now Cairngorm is happily charging again and seems as good as new. For my next trick, I think I'm going to replace the hard drive, maybe give it a bit more memory, swap out the screen...