Ibook won't power up after power outage

Help! I had a quick power outage last night and now my ibook g4 won't even turn on. I have nothing from it. The battery lights come on. The charging light from the adapter is on when plugged in. The computer was on a surge protector and all other electronics attached to the same surge protector still work with no problem. There is NO response from the computer at all...not a peep.

Hi doggiesam,
I've had a couple of instances of this kind of thing, though admittedly not related to power outages. Try holding the power button down for several seconds, like 5-10 seconds, waiting a moment and then pressing the power button again in the usual way.
If that doesn't work try a PMU reset:
1. If the computer is on, turn it off. (Again make sure that it is really off my pressing and holding the power button as above)
2. 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.
3. Wait 5 seconds.
4. Press the Power button to restart the iBook
Let us know how things go.
Good luck,
Adrian

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Ibook won't power-up

I have an ibook G4 that won't power-up, even though it have a full charged battery and it is connected to the mains. (i have tried removing the battery and power cord and holding down the power button for over 5 seconds, and then plugging in again, but no joy).
One other strange thing to note. I've had a trail of Ants attacking my machine, crawling throught the ports, ventilation gaps and generally anywhere they can go... could this have caused some damage?

Upon doing a lot of searching, I have found the following options for replacing a white iBook power adapter:
http://www.macresq.com/store/detail.php?prodID=P009141
MCE Technologies
http://www.madsonline.com/index.html?
adapter at Other World Computing
Apple's is the only one with the glowing ring, though, and is found here:
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M89 43LL/A
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IBook Won't Power On

Hi Everyone,
I have a 12" 1.33 GHz iBook G4 (February 2006) that has been faithful to me for the past three years. The battery needs to be replaced (it holds a charge for about 10 minutes or less), but I've been avoiding the expense and have just been using it with the AC adapter.
I was using it last week when the adapter came disconnected from the wall. Usually, this would cause it to switch over to battery power and I have a few minutes to plug it back in before it goes to sleep. Last week, however, the entire computer powered down immediately (I wasn't met with the friendly sleep indicator).
I tested the battery on the iBook and it showed a full charge, but I can't get the thing to start up - not on the battery, and not on the AC adapter with or without the battery removed. Any tips on what I might try short of bringing it in to the Apple store? When I ran into problems with my old iBook G3 they used to try giving it a zap with a higher wattage PowerBook G4 adapter ... maybe that's what it needs :P
Thanks!
Matt

Usually, when a computer goes through a power outage
(and has no battery backup) the unit can be restored if
there was no surge or spike damages by resetting the
Power Management Unit.
When you have a good power adapter and battery, with
all other things being OK, this reset should fix the matter.
Other parts which could go bad include the DC-in board.
Resetting PowerBook and iBook Power Management Unit (PMU)
http://docs.info.apple.com/article.html?artnum=14449
Did you check to see if the original battery, or subsequent
if OEM replacement for the iBook, was subject to the recall?
Good luck & happy computing!

IBook won't power on, but the fan is running top speed

hy,
just got back an iBook from the Apple Store and now it won't turn on..the screen stays black but the fan (at least it sounds like a fan) keeps running quite fast and loud.....any help would be greatly appreciated
neil

sad thing is the logic board was just replaced (within the last week)...not cool
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Ibook won't power up - was fine before w/ no problems... help!

hello all,
okay, i was using my ibook this morning with no problems. i come home and push the power button to boot up, and it doesn't boot up - it acts like it's dead. doesn't make a single noise like it's trying to do anything - it literally acts like it's dead. i've had literally no problems with this in the entire three and a half years i've owned it (bought it new at the apple store). i'm needless to say a little freaked out right now...
any advice/troubleshooting tips are greatly appreciated!!
thanks!
ibook G3 900mHz 14.1" Mac OS X (10.4) 384 MB RAM, 40 GB HD, CD/DVD combo, Airport

Upon doing a lot of searching, I have found the following options for replacing a white iBook power adapter:
http://www.macresq.com/store/detail.php?prodID=P009141
MCE Technologies
http://www.madsonline.com/index.html?
adapter at Other World Computing
Apple's is the only one with the glowing ring, though, and is found here:
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M89 43LL/A
I believe the one from Other World Computing is the sturdiest of the lot. We've tried most of them. The one from MacResQ gave out after two years.

IBook won't power on... power management issues?

Hey everyone,
_MY SYSTEM_
I've got a 12" iBook G4 (1.33 GHz) running 10.4.10 that's about a year and a half old. It's been a great computer for me, and I've used it on an almost daily basis since I first got it. Its experienced a few power-related quirks within the last month or so, however. I can't think of any event that would've caused them.
_THE SYMPTOMS_
I first started noticing that OS X sometimes displayed the low battery warning at odd times or not at all. I didn't think much of it... figured it could be my power adapter coming unplugged or something. Then I started noticing decreased battery life, but I chalked it up to the effect of fairly heavy use and lots of charge cycles. I continued to feel like my power adapter was getting progressively more finicky... it started requiring much closer contact with my iBook than it used to, but since it's a friction fit, I figured the contact was just getting looser.
_CURRENT STATUS_
When I turned the computer on this morning and plugged in the charger the status bar icon didn't seem to recognize it as attached to the adapter. The colored ring around the connection point would go green when connected, but never turn amber. So I used it today until it went to sleep on me. Tried plugging the adapter in, but the same issue existed... the ring would turn green but never amber and the iBook wouldn't actually charge.
TROUBLESHOOTING
I first tried another adapter with no luck. I was able to use the power button to shut my iBook down with the intent to reset the power management unit on startup. That key combo didn't even produce a startup, it just killed the adapter's indicator light for a brief moment. Unfortunately the battery seemed too depleted to start the computer back up. I tried zapping the pram, and that got me to the login screen before the computer recognized it was low on power and went back to sleep.
SUMMARY
As far as I can tell, the computer isn't recognizing either adapter when one is attached. The battery doesn't seem to be the issue. My iBook is completely unresponsive without the battery (only on AC power), and doesn't charge the battery when both are connected. Anyone have suggestions for me before I make the trek to the nearest Apple store?
Thanks,
Matt

If the power adapter seems looser when you plug it in, you might have a problem with your DC In Board. This is what the power adapter plugs into, and it can become damaged.
You can go to http://www.ifixit.com/ and look up the DC In Board for your iBook and see what it might take to fix it yourself. If you go to the Apple Store, have them take a look at it.
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IBook won't boot up after a rest..

I hava the most weird problem with my iBook..
As I have it running, it works just fine.
I can boot it up, install software and do all sorts of things with it but when I turn it off and let it stay like that for like couple of hours, it won't boot up no more.
With the OS disk I can revive it, just now it took 5 tries, but it started and now as I shut it down and turn it on again there is no problem. But yet again, if I let it stand there for a hour or two, we are back in with the same problem, it won't finf the boot disk and needs to be revived with the OS intallation disk.
I reinstalled the whole (clean install) system today, had everything set up and installed all my software and such and there was no problem during the whole day, but now I had it turned off for few hours, it's just the same..
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Now there is a new HD and it works better than this iBook has ever done.
That's great! Glad that resolved your issue.
So, problem solved, not in a conventional way but solved.
Well, actually, pretty conventional. The average life of an internal HDD in a laptop is approximately 3 to 5 years, and even if they survive beyond that they can fail suddenly or else continue with progressively degraded performance until they expire. The new HDDs have larger capacities and faster rotational speeds, both of which significantly boost performance.
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I got a power outage a couple of hours ago. And now my iMac won't boot. When I power it up, it gets pass the white screen with the apple logo. The screen than turns blue with a spinning cursor. The cursor spins for about 10-15 minutes and stops but the normal login screen never appear and it won't boot into the desktop either. I just got a blue screen.
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After a circuit breaker was shut off the computer won't start. I cleaned out the computer and got the light to go green by putting a hair dryer to it.
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Typically what happens during a power outage is not good. It can do strange things. If it took using a hair dryer to get the green light on the back to come on, that is a bad sign. HERE is a troubleshooting guide for power supplies. Start with that.
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Please click "Accept As Solution" if my help has solved your problem. ----------}
This is a user supported forum. I am a volunteer and I do not work for HP.

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Hey Shim..,
Certified Apple Technician and he agreed that it is probably the transistor (what he called it) that is failing, since it's not holding Date & Time
OK but a transistor is a long way from a microprocessor. Uhh where did he get his...oh never mind.
I have read in some forums about the leaking super cap,
I'd be interested in those leads
but I haven't been able to find any photos or anything that shows where on the board this is located.
Just put one up here, it's from a 12" G4 1.2 GHz:
http://www.photolava.com/view/d5pr.html
They're pretty distinctive, so hard to miss.
Here's the blowed up one from the 500MHz 12" G3
http://www.photolava.com/view/d5pu.html
Now that's blowed up
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Well let's determine if it's bad first. Usually when these things fail it's pretty obvious.
I'd try blowing out all the chips we talked about first since I believe a tiny bit of smutz will cause a CMOS micro to crash.
It reminds me of when these early PMUs will crash and drag the battery down with it in a matter of days vs years.
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@Kenteeple and @oli22 If you make a copy, will that print black?
-------------How do I give Kudos? | How do I mark a post as Solved? --------------------------------------------------------

Computer won't start up after power outage....

We just had a power outage when our computer was on and now that our power is back, the computer won't start up. (I'm typing this on our power book!) I hold in the button on the back, get the "bong" and then the computer whirs for a while with a black screen and then just dies. What to do??

You can, in addition to Barry's excellent suggestions, reset the SMU.

IMac won't go to sleep after power outage.

My iMac suffered a power outage for approximately 10 seconds and powered back up after an extended start up apparently okay. That was until I tried to put it to sleep. Since this outage I cannot put the iMac to sleep. It simply does not repond to pressing the sleep apple menu item. It will shutdown though.
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1046/3492
Hi Barrovian,
Yes, a power outage may cause system file corruption in some cases.
Luckily at least it doesn't prevent your Mac from starting up.
I would try to trace and repair as much as possible.
-- Firstly, is it only one user account that is affected, or all? If other accounts are OK, then the system is not corrupted.
(By the way, it is always safe to have at least another admin account ready, as you can see...)
Preferences files: run Preferential Treatment or the plutil preferences feature in OnyX for example. Trash any .plist file that would be corrupted.
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and
/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist
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Ibook won't power up after power outage

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