I poked through the first time, however on the second one, there was not enough room to accommodate another tip. Thanks to instructions on how to remove the DC board from ifixit I managed to pry the two tips out of the unit and it is now charging and all good.
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Warning: Resetting the Power Manager on any PowerBook or iBook will permanently remove a RAM disk, if present, and all of its contents.
If the computer is on, turn it off.
Disconnect the AC power adapter.
Remove the battery.
Press and release the reset button (shown here) located above the Audio/Video port on the left side of the iBook (Dual USB) computer by inserting the end of a paper clip into the small hole and gently pressing the switch once.
Wait 5 seconds.
Reconnect the AC power adapter.
Put the battery back in the computer.
Press the Power button to restart the iBook computer.
If you are not using the AC adapter (you are using only the battery), then the battery may be dead - simply replace the battery. If you are plugged into the wall, and the light on the power cord, where it meets the computer, is green, the unit is receiving power. If the unit is receiving power and it will not boot at all, then either the motherboard or the hard drive is most likely problem. You can replace the board, but it may end up being more expensive on an older G4 than it is worth. Once you are able to determine if the unit is receiving power, the only thing you can really do from there is take it to a repair shop and have them perform a test on the power supply, hard drive and/or the motherboard to see which one of those is causing the problem. If the hard drive is fine, you will most likely be able to recover your files.
Got the same problem with my ibook G4. I have research on how to fix it, and found out that most model of G4 has the same problem. I soon found out the main problem and the solution, it would require some skill in soldering and dis assembling the whole laptop. Go to this site and hope it will help you just it like it helps me a lot!
hello Um i had the same problem as u. its ur dc board it connections are lose or just broken off inside the machine i had to replace the dc board on my ibook g4 2004Late it cost me about 25$ i recall there on ebay for that price when i got mine.
Is the power adapter the correct voltage? Does the battery show that it's charging? If the answers to these are both 'Yes' then remove the battery and try to start up again. If this works, reinstall the battery and everything should be fine. Another possibility is that you may need to reset the PMU. If none of these work, you may need to replace the Power Board/Power switch/Logic Board.