My powerbook won't power on (no bong or fan )

hello fellow apple friends, i got a broken powerbook from one of my friends (powerbook g4 aluminum 12'' 1.5 ghz)because the ribbon cable connecting the display and the motherboard was broken. so i replaced that and it powered on, but when i was putting it back together it didnt turn on after that. i soon replaced the dc-to-dc board after that. there is a small battery on the machine like a watch battery, i think thats the problem. please help!!!

The small battery is a PRAM battery. It could be the cause of the non stsrt.
Troubleshooting portables that won't turn on or start up
http://support.apple.com/kb/TA25686?viewlocale=en_US
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
 Cheers, Tom

Similar Messages

Help! PowerBook Won't Power On and Start Up!!!

Hi All,
I’m hoping someone out there can help! My PowerBook G4 15 Inch (Original model) won’t start at all. When I push the power button, nothing happens. Nothing at all. No lights, no sounds, no fan, nothing. It was working fine when I put it away on a shelf in my closet about a year ago, but when I took it out to look up a document, I found that I couldn’t turn it on. It hasn’t been dropped, knocked, exposed to water, etc. It’s literally just been sitting on a shelf for about a year. Some information which may help:
1. It appears that the battery does not hold a charge anymore, because I left the laptop plugged in overnight and the indicator lights on the battery still do not light at all when the power status button on the battery is pressed. However, I don’t think this should affect startup when the AC adapter is plugged in – the PowerBook should start up regardless of the power status of the battery. (By the way, I know that the AC adapter is good because I tried it on a friend’s PowerBook and it works fine.)
2. I’ve already reset the PMU (several times) by pushing the little button on the rear of the PowerBook with the end of a paper clip. That doesn’t change anything either.
3. I’ve removed the battery and left the laptop plugged in for approximately 15 hours just in case the internal PRAM battery needed a charge after having been stored for so long. No luck there, either.
I can’t understand what could have happened to it just sitting on a shelf! I had another Mac laptop sitting right next to it for the same amount of time, and that one started up just fine. Does anyone have any ideas as to what the problem could be and a potential solution(s)?
Many many thanks in advance to anyone who can help!

Appler5 wrote:
it seems fairly cheap and easy to fix
Yes, which is why I'd tackle that first. My first suggestion would have been to try the power adapter with a meter or on another Mac or check, but you're a step ahead of me on that, so aside from a possible, but highly improbable death while resting on the shelf, the b.u./PRAM batt is the obvious issue.
I do hope that's what this turns out to be
Me too. It'd be worth it for your time and money, whereas other, major, components would likely not be cost effective, given the PB's age.
I'll update with a post when I know more.
Please do, and good luck!

Powerbook won't power on---please help!

Left Powerbook on overnight. This morning couldn't wake it up. Blue light at latch pulsing but nothing would wake it. Also noticed no color at battery charge input where it is usually green or orange, there was no color.
Finally took off the battery, left it off for the internal to run down, and when the pulsing light finally went off, I put the battery back. And now I still can't get it to power on.
I would appreciate any advice on what to do next.
Thanks!

Try a PMU reset:
1) If the computer is on, turn it off.
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.
$) Press the Power button to restart the computer.
from this Apple article:
http://support.apple.com/kb/HT1431

Powerbook won't run off of battery - requires PMU reset to power up with AC

Like everyone else posting here, my powerbook won't run from the battery. I have two batteries, one that came with the computer 3 - 4 years ago and a newer one that I purchased about 1 year ago. When I am plugged into AC using iStat Nano the newer battery shows cycles 173, health 89%. The older battery show cycles 0 and health 100% (go figure!). Both batteries just say 'calculating' on the tool bar battery meter. The light around the AC adapter plug always shows green as if the batteries are fully charged.
Here is where my post differs from the others. Once I shut down the computer I can't power it up again with reseting the PMU. I've tried reseting NVRAM and deleting and re-establishing the powermanagement plist as suggested elsewhere on this forum to no avail.
Is the PMU something that can be replaced? How is it related to DC-IN? I've read elsewhere here that is another problem that could cause these symptoms. Has anyone had these two components repaired and did it fix the problem? How much did it cost?
Thanks in advance for any information you can give men.

I had the same experience. I have 10.4.10 on the cloned drive but the battery is still not charging. I decided to take a closer look at the battery updater instructions and discovered that even though I am at 10.4.11 on my Powerbook the BatteryUpdater.bundle was at revision 1.1.3 and hadn't been updated since Jan 6, 2006. So I downloaded the BatteryUpdate that is posted at the top of this forum and installed it. It has made no difference in the operation of the computer. The AC adapter still isn't charging the battery although the green ring light is on which usually indicates the battery is charged. furthermore, when I go back and look at the date and version number on the BatteryUpdater.bundle they haven't changed. Who knows what the update actually changed! There is no mention of it running in the software update log. My system profiler says:
The battery is installed
Full charge Capacity 3890
Remaining Capacity 0
Cycle Count 173
AC adapter cannot charge battery: YES
By the way, my battery is a replacement battery.
I have just about exhausted all my option other than taking it into an Apple repair store and I'm not sure at this point I want to give Apple any more of my money. I am going to live with it the way it is for a while in the hopes that someone will post a fix for the problem. Good luck with your investigation. If you find out anything else please post it here as I will check back on a regular basis. If I find out anything else I will do the same. Nice working with you.

IPhone won't power on or show battery icon after discharge.

My iPhone4 ran out of battery. I plugged as soon as I could after it ran out (within 15 mins) and charged it overnight. It won't power on this morning and does not show the charged battery icon on the screen. The phone is only 4.5 months old and has never been left in a car or extreme heat. I always let the bettery run down to <10% before charging and then charge back to full capacity. I have tried holding down the home key and the sleep/wake buttons individually and together and nothing. Any suggestions?

Thanks for the help. I had tried to connect it to the computer on my own and found out that my version of iTunes must be too old to talk to my iPhone4. I am still running 10.4.11 on my PowerBook G4 which uses an older version of iTunes. I don't use the music feature on my phone to conserve my battery for Apps and other features I really like and leave the music to my Shuffle. Guess I am really lucky it doesn't work as I would hate to loose my photos of my new grandson. I need to find a quick way to send them to backup storage.
When I disconnected after trying the computer and tried your suggestion of holding it until I saw the symbol, it finally worked. Guess I did not hold them both together for long enough. The battery only shows 31% even though it was on wall charger all night. I will use it as is today and charge it overnight again to see if it gets a full charge.

AC adapter bad? Powerbook won't run without battery

I think my powerbook (G4 aluminum, purchased Dec 2005) AC adapter is bad--the powerbook won't boot up without the battery (which, thankfully has not been recalled!).
I did check the AC issues listed in this Apple doc:
http://docs.info.apple.com/article.html?artnum=302461
The light on the adapter is green, the battery charge indicator menu states "Charged." However, none of the 5 lights on the battery are lit when the AC adapter is plugged into the computer and an outlet.
I have both AppleCare and ProCare--would a replacement AC adapter be covered under either plan?
P.S. the logic board was replaced in this powerbook last week by Apple because the computer would not boot up, there was a loud "fan" sound and one beep every 3 seconds.
Anyway, help!
powerbook G4 ( Dec 2005) - ARRRGHH! Mac OS X (10.4.7) and ibook G3 (10.3.9) -- never any problems!

I appreciate your advice! I agree that I should take in the powerbook for another round of repairs. However, I want to get some idea of the possible causes of this problem before returning it. Here's why:
[warning: venting ahead]
I am not taking it back to the nearest Genius Bar because of the poor, indifferent service there. Specifically: first guy guesses that the logic board needs replacement, and says the contents of my hard drive are not "protected," then tries to sell me ProCare, which has some kind of hard drive back up deal included. Since I hadn't backed up in months, I bought the Procare contract.
The next day, a different local Genius tells me that the hard drive could not be recovered, it was the cause of the computer crash, and just the hard drive will be replaced at the factory, and it will take 2 weeks.
Two days later, another Genius calls to say my computer's ready for pick up. They replaced the logic board, and the hard drive is fine--untouched. Hurrah.
I used my Procare status to get a Genius appointment to pick up the computer. Yet another Genius doesn't want to listen to my complaints about the "hard drive disaster Genius." I make him turn on the computer [battery power] to make sure the hard drive is OK (yes). I am then shooed out the door.
This is why I don't trust the local Geniuses to examine my computer again. The second nearest Apple store is 25 miles away, so I guess I'll go there for future repairs.

Adaptor won't power my PB: the battery is running out!

I was wondering if anyone found a solution to the problem below that I found in this forum. I am having the same problem and don't know what to do. Just wish that this wasn't an internal problem.
========================================================
I've got a 1.33Ghz PowerBook G4 15" and I am having problems with the AC adaptor.
When I plug the adaptor in, the light on the adaptor turns orange but won't charge the battery or power the computer - it will only run from the battery. If I wiggle the connector where it plugs into the computer then the light goes green but still won't power the computer.
The connector where it plugs into the computer feels quite loose, do you think replacing it would work, or is it an internal problem?

When you say connector are you referring to the port that you plug the adaptor into ON the computer? THAT is loose? Or are you talking about the plug part?
Did you ever get your problem resolved?
All of a sudden I'm having an issue when I plug the adaptor into the port it glows for a brief second and then it stops, so it's not powering or charging my powerbook. I can't use it because there is only 4% battery life left. I don't know if it''s the adaptor or the PB itself...nothing is loose. But I'm a little annoyed because this computer has only been lightly used as a backup, so it's practically brand new and a little premature for things to just stop working...
I can't remember what OS and I can't check right now. It's over a year old.

PowerBook Won't Boot Past the Apple and Spinning Flower Screen...

I've been reading a lot of these forums, but still haven't figured out how to fix it on my laptop. So, I made my own topic.
Anyways. My dad gave me this laptop since he got a new one, so it's a hand-me-down which means I don't have this startup disk that I keep seeing talked about. I've tried Safe Boot, but when I do it with Command + V, it says all sorts of things that I just don't understand, and there is a lot of talk about the Apple Power Management? Such as:
com.apple.driver.AppleIntelCPUPowerManagement isn't a valid mach-o (magic is cefaedfe)
error mapping module file com.apple.driver.AppleIntelCPUPowerManagement
can't map com.apple.driver.AppleIntelCPUPowerManagement in preparation for loading
couldn't alloc class "AppleIntelCPUPowerManagement"
Etc, etc. And then the last lines that it ends with say:
BSD root: disk0s3, major 14, minor 2
[HCIController][configurePM] power parent ready after 1 tries
And it just stays there and doesn't boot up.
I honestly don't know what any of this means, or if it is even relevant to why my PowerBook won't boot past the Apple screen. If you have any information on how I could fix it, that'd be great. Also, if you have any questions that would help you figure it out, ask away and I will answer them.
Thanks a lot.
Message was edited by: MixtapeChick

MixtapeChick:
Welcome to Apple Discussions. Congratulations on your "new" PowerBook. I suggest that you begin with this combination procedure:
• Shut down the computer.
• Locate the following keys: Command, Option, P, and R. You will need to hold these keys down simultaneously later.
• Turn on the computer.
• Press and hold the Command + Option + P + R keys immediately after the startup chime.
• Hold keys down until you hear the startup chime for the third time.
• Release the keys and immediately hold down Shift key to start up in Safe Mode.
• Log in and empty Trash.
• Restart normally and log in.
Let us know how it goes.
cornelius

La Cie Mini external HD suddenly won't power up

I've had a La Cie Mini HD connected to my iMac G5 for over a year, and I just noticed today that it won't power up at all. I've always used the built-in USB port, and the only other device I've ever connected that way is my iSight camera. (I noticed the La Cie went a little wonky whenever the camera was connected, so I got in the habit of shutting off the La Cie whenever I did a video chat.) I've just tested the iSight on both built-in USB ports and the camera works fine, so it doesn't seem to be a problem with the USB port. I thought it might be related to recent software updates (I did the 10.5.8 update and whatever else has come along in the past week), so I repaired disk permissions, but the HD still won't power up. Would appreciate any advice!

katydid1969 wrote:
I've had a La Cie Mini HD connected to my iMac G5 for over a year, and I just noticed today that it won't power up at all. I've always used the built-in USB port, and the only other device I've ever connected that way is my iSight camera. (I noticed the La Cie went a little wonky whenever the camera was connected, so I got in the habit of shutting off the La Cie whenever I did a video chat.) I've just tested the iSight on both built-in USB ports and the camera works fine, so it doesn't seem to be a problem with the USB port. I thought it might be related to recent software updates (I did the 10.5.8 update and whatever else has come along in the past week), so I repaired disk permissions, but the HD still won't power up. Would appreciate any advice!
Hello katydid1969
(1) Can you take another look at your system and perhaps correct your problem statement?
(2) *Only built-in iSights are connected via USB*, but built-in iSights cannot be "connected" and disconnected. If your camera is an external iSight, it connects via Firewire rather than USB.
If you are having problems with Firewire iSight when connected at the same time as your Firewire LaCie drives, yours is a common problem that has existed as long as iSight. I believe that the problem relates to the differences in data stream timing between multiple connected Firewire devices.
Although adding additional Firewire cards to tower Macs (iMacs do not have this expansion capability) is reported to work for some users, the *only certain work-around that I have ever found is to disconnect other Firewire devices when using your iSight and turn off or disconnect your iSight when using other Firewire devices*.
For more info, see this linked page regarding Possible Hardware or Software Conflicts with iSight or iChat.
If your LaCie drive is connected via USB, it does NOT likely conflict with your external iSight (or vice-versa.) In that case, you will need to troubleshoot the drive, cables, ports or other USB possibilities.
(3) If your problem does NOT relate to Firewire devices, we will try to offer other suggestions in response to the details in your reply.
EZ Jim
G5 DP 1.8GHz w/Mac OS X (10.5.8) PowerBook 1.67GHz (10.4.11) iBookSE 366MHz (10.3.9) External iSight

My powerbook won't start up

my powerbook won't start up propperly. instead i can heer 5 beeps and the power indicator flashes. screen stays black. nothing! i tried to connect to an other mac with firewire but my powerbook doesn't respond. i also tried to use the startup disc but again...nothing. what next?
does anyone have an answer to this disaster?
powerbook g4 15' Mac OS X (10.3.9)

Welcome to the Apple discussions.
Sorry to hear about your startup problems. 5 beeps is bad...per this Apple note, it says the processor is unavailable: http://docs.info.apple.com/article.html?artnum=58442

Good Ol' G4 12" won't power up - weirdness.

I know this is sooo 2003 but I wanted to see if any geniuses out there might offer some insight...
My trusty old 12" Powerbook 867 (god I loved that machine) died last night, just as I'm getting ready to give it to my 10 yr. old nephew. I got some great mileage out of this machine and am hoping I can save it to give it just a bit more life...
As it was getting old, I have been putting up with occasional tired wake-ups and power issues. Most significantly, it suffers from a heavily dented corner right where the power plugs in, and therefore from a very unstable connection, resulting in constant checking to make sure the unit is getting power.
Recently, I've been noticing that although the connection is intact , I never see the power indicator ring light turn from green to orange - even when it obviously needs charging from constant disconnects.
Anyway, at some point last night she went into a deep sleep (the little light near the front latch pulses gently and no key combination would wake her), so I pulled the battery out and put it back in, hoping a hard reset would at least let her start back up.
Now, the machine won't power up at all, and the power connection ring indication is green. Both batteries I have for it give me the rapid blinking dead signal, so it looks like I have no way to power it back up.
I've tried resetting the PMU to no avail. (http://support.apple.com/kb/HT1431?viewlocale=en_US)
My hunch is that the power management circuitry is dead, and that my best bet would be to replace the DC-in board, as suggested here: http://www.ifixit.com/Guide/Wiki/PowerBookG4_Aluminum_12%22_Troubleshooting#Section_My_PowerBook_won_t_turnon
Before I spend hours taking this little baby apart, does anyone have any other suggestions? Could it be the power supply not working properly (and somehow giving a false green light indication?) Any other ideas out there??
Thank you so much in advance.

Because you say the corner where the power cord plugs in has been heavily damaged and contact with the plug is iffy, a bad DC-in card (possibly caused by something on it shorting out against the dented case, or possibly by breakage of one or more of the port's contacts with the card) is by far the most likely suspect.
Getting to the card in that model is no joke: it requires a total disassembly of the machine.
http://www.ifixit.com/Guide/Repair/Installing-PowerBook-G4-Aluminum-12-Inch-867- MHz-DC-In-Board/214/1

IMac DV won't power up

My iMac DV 400 won't power up. When I press the power button, the light comes on for a second or so, and I can faintly hear the drive start to spin up but then before the computer is able to check any other hardware, before it makes the standard "bong" sound, it just shuts off. I can hear it make a faint clicking sound just before it shuts off. Sounds like a switch is opening. If I press the power button again, nothing happens. I have to unplug the computer and plug it back in to try to power up again, but it just does the same thing.
The computer is plugged directly into the wall (not through a ups or any other device). I tried with a different power cord, but no impact.
Any ideas for what to do to correct this problem?

I have heard reports suggesting that a problematic PMMU can cause the logic board battery to run down in a matter of days. At least, I recall an Apple Knowledgebase article about Power Mac G4's that said a crashed PMMU, if left in that state, drains battery in 4-6 days. I don't know if this applies to the iMac, but logic board batteries are cheap and worth a try.
If you have already updated the firmware for OS X, then there is no need to do it again. The current firmware updater is the one that's posted to Apple's site. It has not changed since 2001.
You can try the usual things that people try when machines don't power on: reseat RAM, swap out RAM, remove and reinstall the logic board, blow on it, whack it, dust it (not with a vacuum -- with canned air), check connections, check fuses on the analog board, disconnect all drives, replace the drive with a test one to see if the drive is the problem, etc.
If these are not the problem, you can repeat some steps (to see if it is an intermittant fault). Otherwise, you will need to download the appropriate service manual from this page:
http://www.whoopis.com/computer_repair/
Detailed therein is the way in which you can test (using a voltmeter, and with extreme care) whether the analog board/the power supply are good. Conducting this test will require you to have the machine powered on and will put you inches away from 26kV of voltage used to drive the CRT (at the back of the tube and on some of the components). Personally, I have never done this because I consider it too risky. If you are experienced with electronics, go ahead, otherwise I'd wait until someone else on the forum take a look at this and suggest things that I might have missed.
Based on what you said though -- clicking sounds, and power off shortly after powering up, I am guessing an internal short somewhere is causing a safety mechanism to trip out and power down your computer, esp. when it will ignore the power button. Check for a loose screw (pick it up and jiggle it, do you hear a loose part?) Check for things that might be causing a short. If you don't see anything obvious then it might be a component failure (specifically, a capacitor, a chip, or the flyback transformer we talked about earlier) that is causing the shorts. Tracing component-level faults in an iMac is beyond my technical expertise.
The iMac I picked up curbside has a screw loose. So far I haven't been able to find it, but it isn't causing any shorts, so I just left it.

Ipod won't power up, except on clock radio

I have a 30GB 5th gen iPod, which I got in Aug 2006. It has always had good battery life. Recently, I have had problems disconnecting the iPod with my Powerbook (after ejecting it), and this has sometimes cause the iPod to restart, or has caused the computer to freeze. But usually nothing bad happens when disconnecting. This morning, it lost all power when disconnected, and would not reset. Therefore, I can't get it to mount, since it won't power up. I tried resetting multiple times (and tried to go into disk mode), with the sync cable connecting to the PB (also tried 2 sync cables). Nothing worked, but when I connect it to my clock radio with dock, everything works just fine, and the battery icon reads full. So I am guessing that the battery might be bad, despite the full battery icon, but that would be rather sudden, as I have never noticed any reduction in battery power. Could it be a bad power management unit? Anyone have any ideas? Is this perhaps related to recent iPod software update? Is the next step to send to Apple, or a third party repair service?

Well, it turns out that my iPod battery was just deeply discharged. I'm not sure how, since it was plugged into my PB all night, and I put it on the clock radio dock for 30 min or so. But when I charged it will my stand-alone iPod charger (AC to usb to dock connector) for over an hour, it worked just fine. So this may illustrate some bug, that the iPod displays a full battery icon sometimes when on a dock, even though the battery is discharged.

Installed the update tonight and now my phone (Lumia 928) won't power up. I've tried a soft reset, but the screen goes from the Nokia logo to a red Verizon screen to a black screen. What's wrong and how do I fix it? Help!

Installed the update tonight and now my phone (Lumia 928) won't power up. I've tried a soft reset, but the screen goes from the Nokia logo to a red Verizon screen to a black screen. Tried it 10 times with the same result. What's wrong and how do I fix it? Help!

Oh no Mr.Ected!
I can see if we can get your phone back on! I understand how important it is to have a phone. Have you tried this to see if we can get it back on? http://vz.to/1DZhteH . If it is still goes to a red Verizon screen and then to black we might need to do a master reset. While the phone is off try this:http://vz.to/1DZhXkU Be mindful this is the last resort because it will erase everything on the phone. If you have done back up assistant in the past you will be able to get you contacts back. Please let me know if you need any more help.
AmberF_VZW
Follow us on Twitter @VZWSupport

My Powerbook will not power up, but I can hear the fan running...

Please help!! My Powerbook will not power up, but I can hear the fan running when I press the power button to attempt to power it up. I just received a new power adapter because it wasn't working properly and it was doing this before and then it worked for a week and now it will not power up at all. It just starts the fan but nothing else turns on. When I plug the adapter, with the battery still connected, it will look as if it is charging but then the light on the plug turns from green to orange then off and doesn't power up at all. If I take the battery out and plug in the adapter, the light stays on but it does not power up except for the fan noise. Does anyone have any suggestions? I also followed the two articles listed online in regards to resetting the power setting and the command + alt + P + R as well. Nothing works. Thanks in advance.....

Same here. If I start up with the power adapter attached, it starts up fine. If I try to start up from battery only, the fan comes on, the sleep light comes on but nothing else happens. I tried letting it sit that way for about 15 minutes and nothing changed. I tried attaching the power cord while in this mode and nothing changed. I tried the PMU reset a couple of times but nothing helps.
This computer is just over 1 year old and I have not had any problems with the power cord (3rd party), the battery, or any problem like this before. It started after a proper shutdown last night and attempt to start without the power cord this afternoon.
Any answers to this yet? I think I'll call on this and report any success to this discussion.
15" PowerBook G4 Mac OS X (10.4.8) 1 GB DDR2 SDRAM, 100 GB HD

My powerbook won't power on (no bong or fan )

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