Blinking LED on AC Power Adapter: green light/ red light, slow recharge?

Once recharge reaches about 90% the LED on the AC Power Adapter starts to blink green and red. The battery icon also flashes between "Charged" and time of remaining charge. Flashing cycle dramatically increases time to fully charge the battery, as if it gets stuck in an infinite loop and can't reach a full charge. A few days ago problem started after the most recent software update. Battery has a mark of corrosion, one small rust looking mark. Power Cycle Count is 329. Unexpected shut down (not sleep) did occur one time when battery was at low charge. BatteryUpdater.bundle is Version 1.3. Battery was calibrated also a few days ago. MacBook is not under the extended warranty. Any idea if this is the battery problem or AC power adapter, or even a glitch in the recent software update?

Hi,
I've the same problem. Once recharge reaches about 95% the led on the Power Adapter keeps blinking.
The battery icon does the same. I also had a sudden shutdown. Battery is not damaged and cycle number is 147. I've tried downgrading BatteryUpdater.bundle from version 1.3 to 1.2, but nothing changed. Any idea about a possible cause/solution?
Thanks,
tom
ps: some more information about system cofiguration
White macbook (1,1) 1.83GHz Intel core duo.
OS version 1.4.11
Message was edited by: tleonardi

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Power adapter green light no power no charge

Thanks in advance for any help with this; I'm a Peace Corps Volunteer currently serving in rural Cambodia, so it's a little tougher to deal with this problem and/or get an alternative computer.
I had been using my MacBook when I realized that although it was plugged in and the LED was green, the battery was losing charge. I tried cleaning out the connector and magsafe port and doing some other trouleshooting including trying to reset the PRAM and SMC. Eventually I was able to borrow a different adapter from a friend, and that didn't work either, so I know it is not an issue there. At this point, the battery is completely drained, and although the LED still lights green (and sometimes orange for a few seconds after being plugged in), the computer will not turn on at all even when plugged in, so it is not just a battery issue. I've been fiddling with it for about a week and no luck on anything. Other than this problem, everything seemed to be working completely fine until the battery died. From some reading, I'm wondering if the problem may the logic board. If so, does anyone know how much it would cost and how long would it take to fix that problem? Are there any other possible things it could be? I'm in a situation where, luckily, there is an Apple repair place in the capital city, but I can only be there for short periods of time once in a great while. I also don't have access to a whole lot of cash and would need to plan in advance if it will be pricey. My Mac has been great until now and is the way I Skype with family and friends, save photos, watch movies, etc from my Peace Corps village, so it would be really great if I could get it fixed. Thanks for any help!

The "power cord" is just an extension cord to give you more length then plugging in the MagSafe adapter. Leave it plugged in if you don't want to drain the battery, otherwise run on battery.
The "duckhead" slides off of the magsafe so the extension cord can plug into it.
Here's an illustration.
http://support.apple.com/kb/HT2346
Regards,
Captfred

Hello, My white McBook (2008 or 2009) recently stopped turning on. When I hook up the Magsafe power adapter, the light shows green, but the computer will not turn on, or make a sound. I've tried the re-boot option, but nothing works. Please advise!

Hello,
My white McBook (2008 or 2009) recently stopped turning on. When I hook up the Magsafe power adapter, the light shows green, but the computer will not turn on, or make a sound. I've tried the re-boot option, but nothing works. I first thought I needed a new battery because the lights at the back are all off, but shouldn't the computer turn on once the power adapter is hooked up and the light on the Magsafe adapter shows green? I'm a computer doofus, so please be kind. Please advise! Thanks in advance.
SS

Take it in for service.

HT1476 Hi! So my original iPhone 5 charger broke and I bought a 10 ft generic iPhone 5 charger And didn't come with a power adapter, what ***** is it charges slow. Can I use a different adapter? and will it effect my battery?

Hi! So my original iPhone 5 charger broke and I bought a 10 ft generic iPhone 5 charger And didn't come with a power adapter, what ***** is it charges slow. Can I use a different adapter? and will it effect my battery?

Nice try! Take a hike.

When using my power adapter, the light is green for a two seconds and turns red.

When using the power adapter for my MacBook 2.1, the little light on the connector is green for 2 or 3 seconds and then turns red. I bought a new adapter, but it is the same thing. It looks like the computer is charging. What's wrong with it.

Nothing wrong. Here is what Macbook manual has to say:
When you first connect the power adapter to your computer, an indicator light on the
power adapter plug starts to glow. An amber light indicates that power is going to the
battery. A green light indicates that no power is going to the battery, which can mean
the battery is fully charged, is not installed, or has a problem. If you don’t see a light,
your plug probably isn’t seated correctly. Check for any debris and remove it. You can
monitor the battery level using the Battery status menu in the menu bar or by
checking the battery level indicator lights on the bottom of the battery (see page 74).

No power and green light on my hp pavilion is flashing

Hello,
I'm trying to figure out if the power supply on my hp is bad or not. The green light on back of the tower is flashing and the computer won't turn on. I've tried all of the preliminary things and nothing works -- the green light keeps blinking until I disconnect the large plug to the motherboard, then the light stays on and doesn't blink. Once I have the power cord disconnected and the main plug to the motherboard disconnected as well, I then have tried replugging the power cord and then replugging the main plug to the motherboard (kind of trying to jump start it), the fan tries to come one (but only for a second, then goes back off, so it won't boot).
Does anyone know if this means that the power supply is bad or if something else might be wrong? I'm wondering if the power supply would be bad when the computer is clearly trying to start, but not quite making it.
This question was solved.
View Solution.

My wife's computer has been having the same problem several times. One solution I found that worked before was to unplug the motherboard power cable and the PSU power cable from the back of the PC and then connect the power cable and connect the motherboard power cable while holding down the power button. Scary, to say the least, but it worked, until one day I accidentally flipped the wrong breaker and then spend two hours trying the same solution with no luck and Googling again. And here is what I found. This is the simplest yet crudest solution. It’s easy and non invasive and it doesn’t matter how tech savvy you are. Take a blow dryer and turn it on to blow air at the back of the power supply for a couple minutes. When you see the light turn green you’re all set. It's worked for me after it worked for a hundred others, maybe more. See the testimonials on this site: http://talk19.wordpress.com/2008/01/13/hp-m7088d-power-supply-led-blinks-green/. It’s a shame that nothing like this appears on any HP site. So don’t waste your money on a new MoBo or PSU. All you need is your wife’s hair drier.

Alternating LEDs on MBP Power Adapter

Hi,
Just before New Year I noticed that my adapter's charge LED had started alternating between green and orange every two seconds or so; I'd left the MBP to recharge over lunch. Since then it's continued to do this once the battery reaches full charge. The various OS indicators of battery charge (menu bar battery icon, System Profiler's Power Information etc) all switch every ten seconds or so between 'charging' and 'charged'.
There's a few similar stories like this in the discussion list; anyone else seeing this behaviour too?
I've tried resetting the SMC, but this didn't fix the problem. I have not tried resetting PRAM, because others who have tried this have not reported success.
My battery has run 37 charge cycles according to System Profiler and CoconutBattery. Current capacity is around 80%.
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MacBook Pro, 2GHz Intel Core Duo
1GB RAM
OS X 10.4.8
Boot ROM Version: MBP11.0055.B08
SMC Version: 1.2f10
Matt
MacBook Pro Mac OS X (10.4.8)

Well, I've received and calibrated my replacement battery, and all now seems well. No more alternating LEDs, so I guess the duff battery's behaviour was confusing the charge routine somehow. If you're getting alternating LEDs, I'd suggest checking that your battery is eligible for exchange. The road goes ever on...
Actually, I did notice on the old battery that a very slight gap had appeared between the metal bottom plate and the plastic shell at one corner. A careful sniff revealed that something (very faint) was coming from this gap, so good thing I exchanged the battery when I did.
Back to work and play.
Matt
MacBook Pro Mac OS X (10.4.8)

Power adapter light is dim, new power adapter no light at all

My power adapter went dim and wouldn't charge. I bought a new adaptor and this one doesn't light up at all. Any ideas? tried different outlets that have worked for other electonics. Did I just buy a second adaptor coincindentally?

Try this. Intel-based Macs: Resetting the System Management Controller (SMC)

Desktop won't power on/Green light will light up a little/fan spins a little?

Trying to help a friend, with an HP computer. Forgot to get the model number. It won't start up, I can momentarily get the green light on the power supply to go on, and the fan runs momentarily. It won't start up.
Would you think it was the power supply or the motherboard? Any Suggestions.
Thanks Bruce

Hello brucefl,
I have read your post on how your friend's computer will not power on, and I would be happy to assist you in this matter!
Since the fan spins a little bit with the green light, I recommend following this document on Computer Does Not Start (Windows 7) or for (Windows 8). This resource should help power on your desktop, or specify if there is a hardware defect attributing to the issue.
For further assistance, I will need to know:
The Product and Model Number of your desktop computer.
The version of Windows you have installed on your computer.
If this is an on-going, or recent issue.
If you have added any new hardware or software recently to your computer.
Please re-post with the results of your troubleshooting, as well as the requested information above. I look forward to your reply!
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MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

My computer's power adapter is plugged into a power source, yet the indicator light is not working and my computer is not being charged.

My computer's power adapter is plugged into a power source, yet the indicator light is not working and my computer is not being charged.

I have the same issue.
The magsafe goes orange for about 20 seconds, the battery shows 0% then it goes to a black X indicating no battery installed.
With a new battery the same happens, although it can run on battery but does not charge.
It runs fine on mains power, the green light is always lit.
I have tried several things so far:
1. Cleaned the magsafe contacts on cable and macbook
2. Reset SMC and PRAM
3. Installed latest battery update
4. Tried new battery
5. Put old battery in fridge for an hour
I work in IT and am fairly confident taking it apart, what should I try next?
Some people recommend a new battery connector, which doesn't seem to make sense as the battery has never been removed before. Also some people say it will need a new logic/motherboard.
Any experts here managed to sucessfully fix one of these?

Power Adapter flashes orange light and won't power on.

I woke up this morning to find that my power adapter's light is off and it is still plugged into the surge protector.
1. When I push the button on the bottom, I get all 4 lights saying that it is charged.
2. When I plug the laptop with another adapter, I get a constant flashing orange light from the power adapter. Mine will flash orange several times and then go black. It's like it's trying to communicate something to me but I don't understand its language!!
3. I have tried resetting the computer, that didn't work.
4. I have tried powering up without the battery in the machine, that didn't work.
Any ideas out there?? I'm thinking that I need a new logic board but I also haven't backed up my info. Any assistance on either of these issues?

I found out that someone had spilt chicken soup on my laptop and it pretty much destroyed the logic board, optical drive, processor and other technical stuff.
*heavy sigh*

Power adapter flashing

Hi
I have a problem with my PowerBook G4. I have it for 4 years now, but this problem came out a month ago.
The power adapter usually lights green when the battery is full or orange when it's charging. And mine is flashing dark orange. And i cannot turn on the computer. I took it to the local agent and they said they have to replace the board sound/dc-in.
After they replaced board sound with a new one i took my computer back home. It was working fine for a while. That is untill I shuted it down. Then same problem again. They have to order new board sound again and replace it.
Now i have removed the battery and didn't use my PB for few days and it's working just fine.
Do you think it could be related to the batteries they are recalling?? Coz my battery did qualify for the battery exchange program both times.
any idea what could be wrong. Can't be the board sound or can it?
PowerBook G4 Mac OS X (10.3.9)
PowerBook G4 Mac OS X (10.3.9)

I've got something like this happening.
I'm starting to have a problem with my adaptor blinking between green and orange on my Powerbook G4 15". It also is making a slight beep with the battery in. The battery is lighting up with the 5th light blinking at the same time. I have to remove my battery to boot up or else the hard drive spins up and nothing else happens.
I reset power manager twice, reset PRAM, reset firmware, fixed file permissions, ran Techtools etc.
This started because I was using an iBook power adapter. But I've used that for some time. It doesn't work completely without the battery but works fine with the adapter for the Powerbook.
I'm assuming this is the battery or a more difficult type of reset that needs to be performed.

Does the warranty cover the power adapter?

Lately my power adapter's light has been cutting in and out. Tonight I noticed it's frayed where the cable meets the input of the adapter. I'm wondering if the adapter is covered under Apple's warranty. I have Apple Care.
Furthermore, the battery also doesn't seem to be holding much of a charge these days. The computer is about two years old and the battery only has about 55 minutes of life fully charged. Is the battery covered under the warranty?

Hi,
Neither is covered. The frayed cable would be considered damage which is not covered. And the battery is a consumable item and is only covered for the first year. The average life of a lithium ion battery is about 2 years so it's time for a new one.
John

HT3964 BRAND NEW MAGSAFE POWER ADAPTER WON'T CHARGE THE MAC BOOK PRO

I'VE RESET MY MAC BOOK PRO BECAUSE THE POWER ADAPTER STOPPED LIGHTING UP & WORKING AND ITY'S STILL NOT CHARGING THIS IS A BRAND NEW MACBOOKPRO I JUST PURCHASED IN BEST BUY & I DON'T KNOW WHAT TO DO IT'S NOT CHARGING THE BOOK! DOES ANYONE KNOW WHAT I SHOULD DO?

Do a SMC Reset,
https://support.apple.com/kb/HT3964
https://discussions.apple.com/docs/DOC-3046
A new machine shouldn't need one, but it's it's not charging that's the solution.
All I can figure it sat on a shelf at Best Buy too long, they are closing 50 stores so I hear, so apparantly they haven't been busy like a Apple Store is and product flies off the shelves in pristine charged up like condiiton.

Macbook pro with retina display power adapter popped / exploded!

I was just charging my macbook pro with retina display when a loud "pop" noise came from the power adapter and the red light on the magsafe2 connector went out. I unplugged it all immediately, but there was a burnt kind of smell and bit of black 'sooty' type material around one of the edges of the adapter!
Thankfully the rMBP appears fine.
I actually just got a replacement rMBP as the other one had a small scratch on the body. So both the charger and the rMBP that was atached at the time of the pop, will be returned in a few days anyway. Still I am a little alarmed by it all. The charger was plugged into a 6-way extension adapter with surge protection, so I don't think it was a power surge. And anyway my tv (also plugged into the socket adapter) was on at the time and there was no problem there. Can I assume it was just a fault in the adapter? I will tell them about it of course when I call up tomorrow to arrange the return. I just hope the same isn't going to happen with the new rMBP and charger!
Has anyone else suffered a similar "pop" and broken adapter?

Apple's warranty IS international. You have a one-year warranty when you buy the machine and you can extend that - and your phone support - to three years by purchasing the AppleCare Protection Plan, which is international as well.
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Clinton

Blinking LED on AC Power Adapter: green light/ red light, slow recharge?

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