Ibook g3 won't sleep when plug in

hi when i plug in my ibook g3 and then put it in sleepmode it just wakes up it won't sleep when plug in help how do i fi this

Hello,
Try resetting the PMU
Best of luck.

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I have tried two different power adapters and still have the same problem. If I close the lid, it will start to go to sleep, and then will wakeup, over and over again. As soon as I unplug the power cable, it will go to sleep. If I plug the power cable back in, it powers up and starts cycling again. The fan never really cuts off and the display will go black, and then flash back on.
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I have the same issue - sleep works fine when unplugged, but when plugged in it just cycles on/sleep/on/sleep if the top is closed, or just comes back on seconds later if i sleep it with top open.
Resetting the SMC does nothing. This only started to happen in the last weeks, and not much has changed on my system except mac updates, so it must be something in there...
A real pain.
Anybody...?

IBook G4 won't sleep on schedule

I twice tried resetting the PMU as per Apple's instructions (power off then press and release shift, cntrl, option and power buttons) but it hasn't helped. My iBook simply won't sleep when it's scheduled to. The screen darkens when it's supposed to but no sleep.
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Your method seems to have worked. My clock went back to 7:01 on 12-31-1969 (after I turned off the Airport, that is; the first time I tried this it automatically give me the correct date and time, so I wasn't sure I'd done it right). Then the iBook went to sleep on its own about 30-60 seconds after the screen went dark.
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Has the iBook's case ever been opened? There's a magnet on the bottom side of the top case that activates the sleep switch. Hold a small magnet on the right side of the screen and see if it will sleep. If it does, the magnet isn't where it's supposed to be and will need to be replaced.
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Ibook g3 won't sleep when plug in

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