IBook Display Reversed

On my iBook Dual USB I recently (and successfully) changed the display inverter but since doing that my screen has, for lack of a better term, inverted. When the lid is open the screen is off but when the lid is closed the screen is on. I can't for the life of me figure out what changed on the computer other than piece I replaced. Just for kicks I obtained a second inverter board and it too exhibits the same problem, off when open and on when closed. Since both connections on the inverter board are keyed to only fit one way I'm certain it's installed correctly. A friend thinks this is a software fix but I'm not so sure. I do consider myself pretty tech savvy, having upgraded the memory, changed the hard drive, and twice changing the inverter board. Any suggestions would be much appreciated!
~Brian

The reed switch is the part of the iBook that tells it whether it's asleep or awake. It's located in the right edge of the display bezel (about halfway down) and is triggered by a magnet at the right side of the keyboard (underneath). It's possible that you dislodged the magnet in your journey in replacing the inverter board, but it's puzzling that it would reverse the function. I could understand it simply not working, but this is a new one on me, which is why I thought maybe the PMU reset would do it.
Read about the function of the reed switch and how to disable it _Small Dog Electronics_. If you prefer to replace it, it's going to take more work than you've done before, since it involves disassembly of the display. If you disable it, you'll have to remember to put it to sleep manually before closing it. Apple says not to let it run while closed.
Small Dog Electronics has the part available for purchase (assuming it's the 12-inch model):
http://www.smalldog.com/product/43417
Instructions on how to replace it can be found here:
http://www.powerbooktech.com/knowledge,name-Display-Cabling,type-6.htm
(Note the links to "Things to do first" at the top of the page.)
You may want to try to locate the magnet and make sure it's in the correct position before ordering the part and attempting this complicated repair. I don't see how a misplaced magnet could cause this reverse behavior, though.
Good luck.

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