Okay so I have a 12" PowerBook G4. Model number A1010. My atepmom gave it to me as a gift because she got a new MacBook Pro. I bought a new power adapter because she had lost the old one and I plugged it into the wall and I heard components inside moving but there was no startup chime and the screen stays black and the power level indicator on the battery flashes green whether it is on or off. Is it supposed to flash amber when it is charging? I already tried taking out the battery and holding the power button for 5 seconds. Restarting it and whatnot. Nothing is working. I her a faint humming when it is on and it gets kinda hot on the bottom while it is charging. Can someone please help?! I'm sorry if this is in the wrong section. I am new here. All answers are welcome!!!
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PowerBook G4 Green Blinking Light on Battery
- Thread starter AndersC
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If the power adapter you bought has a charging light on the barrell plug, then yes when it charges it should be orange.
The lights on the bottom of the battery are simply an indication of the battery charge. One green LED blinking means that the battery is completely discharged. This is an issue with 12" PowerBooks and iBooks because they do not have PRAM batteries and use the main battery to keep the clock current.
Consequently if the battery is fully discharged there may be some start issues, even if the battery is removed and the Mac is running off the power adapter.
Of course it could be something else, but let's rule out the battery first.
Put the battery back in and plug the Mac in to charge. Leave it plugged in and charging for 24 hours. Then just try and start it. Let us know if that works.
The lights on the bottom of the battery are simply an indication of the battery charge. One green LED blinking means that the battery is completely discharged. This is an issue with 12" PowerBooks and iBooks because they do not have PRAM batteries and use the main battery to keep the clock current.
Consequently if the battery is fully discharged there may be some start issues, even if the battery is removed and the Mac is running off the power adapter.
Of course it could be something else, but let's rule out the battery first.
Put the battery back in and plug the Mac in to charge. Leave it plugged in and charging for 24 hours. Then just try and start it. Let us know if that works.
The barrel plug on the adapter should be solid amber and the green lights on the battery should blink to show charge status. Try removing the battery and holding the power button for 30 seconds and then 10 seconds. Plug it back in and try to boot without the battery. If it starts then reinsert the battery.
Its a 12" PowerBook, so to reset the PMU is different than what you're trying.
- Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
- Wait 5 seconds.
- try and turn it on.
I was not giving steps for a PMU reset but rather a total board discharge which I have had luck with on numerous laptops in the past.
[doublepost=1465324225][/doublepost]I had the same problem and tried the shift, control, option power method and this TOTALLY WORKED!!! Thank you!!