MBP giving off electricity & MagSafe adaptor is 'whining'

If ever i touch the case of my MBP with one hand and touch something metal that is even loosely connected to the mains supply (eg the back of my iPod Touch which is connected via the headphone jack to my surround sound system which is connected to the mains), i get a kind of shock - not big, just a tingling in my fingers when i move them over the case.
Secondly, my power adaptor constantly whines, it makes an annoying sound like a camera flash does when it is charging - but it does it non-stop and is even worse if the power adaptor is plugged into the wall but the magsafe is not plugged into my laptop.
Any ideas, and are the problems related?
Thanks.

It sounds as if the ground connection is faulty and current is leaking through onto the case. Without being too alarming, this could progress to give you a much more serious (including fatal) shock, especially if you are using both hands (the current passes through your chest).
If there is an Apple store or dealer close, take it in for checking. If not, a comptent electrician could test with a meter and advise about the leakage.
Given the whining as well, I'd take a wild guess and say the power adapter needs replacing, and would recommend not plugging it into the mains for safety reasons.

Similar Messages

  • Please Help! MBP shutting off when plugged in, now not recognizing MagSafe Adapter

    I started seeing this problem a few weeks ago, my MacBook Pro just shut off spontaneously while watching a video full-screen. I turned it back on and the problem went away for a while. But now, the shut-downs happen more frequently. It doesn't matter if the MBP is running off of the battery or if its running off of the AC cord, it will just shut off. No warning. No standard shut-down process, everything just stops and a balck screen shows up. After it shuts off, it takes a few seconds to get it to restart, and when it does, the computer's date and time will be reset to some date in 2000. Very strange, I've had this computer for a year and I know people with the same model that have had no such problems. The battery is at 168 cylces (I use this for school, so it was being used everyday throughout the last two semesters), and the Condition is listed as Normal in the System profiler, so I doubt the problem is with the battery, but I could be wrong. I've seen posts about the RAM/PRAM causing the date/time resets. Nevertheless, the MBP has been running normally on the battery, battery life is still the same length of time as it was when I first got the computer, and runs smoothly. Up until last night, the AC MagSafe Adapter was still working, so I only used that as the power source. Everything was fine, but the MBP shut off once or twice while it was plugged in within the last month or so, but the AC would still have a green light, indicating the computer was still recognizing the power source. Now, I can't get the MagSafe to be rocognized at all. The computer is running on battery only, and I've tried resetting the SMC, but I'm unsure if it worked since the MagSafe is still unrecognized. When its plugged in, the System Profiler says it is not connected and not charging.
    I'm running on Mac OS X 10.6.8, a 2.4 GHz Intel Core 2 Duo, with a 4GB memory (of which less that half is used). Computer usage is low, so its not like I'm running several programs at once, at most, its two or three at a time, for short periods. My MBP is a 13" aluminum body, doesn't seem to be overheating, has worked fine after long periods of being on and getting hot, I always let it cool down after I feel it getting too warm.
    Please help if you can! Thank you!

    Battery Information:
      Model Information:
      Manufacturer:          DP
      Device name:          bq20z451
      Pack Lot Code:          0000
      PCB Lot Code:          0000
      Firmware Version:          0201
      Hardware Revision:          0002
      Cell Revision:          0164
      Charge Information:
      Charge remaining (mAh):          2037
      Fully charged:          No
      Charging:          No
      Full charge capacity (mAh):          5078
      Health Information:
      Cycle count:          168
      Condition:          Normal
      Battery Installed:          Yes
      Amperage (mA):          -917
      Voltage (mV):          11235
    System Power Settings:
      AC Power:
      System Sleep Timer (Minutes):          10
      Disk Sleep Timer (Minutes):          10
      Display Sleep Timer (Minutes):          5
      Wake On AC Change:          No
      Wake On Clamshell Open:          Yes
      Wake On LAN:          Yes
      Display Sleep Uses Dim:          Yes
      Battery Power:
      System Sleep Timer (Minutes):          5
      Disk Sleep Timer (Minutes):          10
      Display Sleep Timer (Minutes):          1
      Wake On AC Change:          No
      Wake On Clamshell Open:          Yes
      Current Power Source:          Yes
      Display Sleep Uses Dim:          Yes
      Reduce Brightness:          Yes
    Hardware Configuration:
      UPS Installed:          No
    AC Charger Information:
      Connected:          No
      Charging:          No
    thanks for the quick reply~

  • MBP with almost full battery switches off if Magsafe removed.

    I have an older MacbookPro (2.16ghz Intel Core, 17") . Its started behaving bizzarely today - with Magsafe connected, its shwoing a green light, and the battery is showing as 91% full, and not charging.
    Checking the health settings on System Info shows its in pretty good shape.
    The instant i remove the Magsafe connector, the Mac shuts off. No warning, just instant shut off.
    I have reset the SMU following apples procedure of removing battery and power, holding power button for 5 secs before reconnecting everything and rebooting.
    Nothing seems to have changed - the battery still refuses to charge and the Mac dies if the magsafe is removed.
    Any ideas what the problem could be?
    or how to cure it?
    thanks

    thanks, i'll have a look, but i've never noticed an option to prevent charging, or to switch off when magsafe is disconnected.
    What do you think i should be looking for?

  • TS1713 Does my 1-year warranty cover the replacement of a damaged Magsafe adaptor?

    The cord on my 85W Magsafe adaptor has been damaged. Does my 1-year warranty cover the replacement of the adaptor?

    The cord directly connected to the adaptor was starting to rip off, and so my mother used electrical tape to fix it. The tape ended up melting, somehow causing the cord to rip off, but not completely. The charger works to an extent - it's very on and off. However, I still would like to replace it for a new one. Will I still be able to replace it? With warranty covering it?

  • Burnt Magsafe Adaptor

    Hello,
    I've had a common problem concerning the wire of my magsafe adaptor for my macbook. It's burnt/melted and won't charge my macbook anymore. I went to a few apple stores, one pretty much told me to sod off, and others told me there's only a warranty of 1 year on the adaptor. I bought my MacBook in august 2006 so that warranty no longer counts.
    Then I found this article online:
    Apple announces Magsafe out of warranty replacement program.
    This one concerns faulty Magsafe power adaptors that shipped with MacBook (13-inch Late 2006), MacBook (13-inch), MacBook Pro (15-inch Glossy) and MacBook Pro (17-inch).
    Source: http://apcmag.com/appleannounces_magsaferecall.htm
    This article led me to the following URI:
    http://support.apple.com/kb/TS1977?locale=en_AU
    A page on the official apple website clearly stating, whether my adaptor is in or out-of-warranty, I should be able to get a replacement.
    What's the deal?

    Print that page and take it into the Apple store. Don't leave without a replacement. Get a manager involved if you need to.

  • MagSafe adaptor very hot

    So, I think my dad ran over my MagSafe adaptor while he was vacuuming the other day.  It's still charging properly and everything but the "cube" of the adaptor is very hot after it's been plugged in for a bit.  Right now it's plugged into the wall via the longer three-prong cord then to the Mac.  I've had it plugged in about 30 mins and it's already so hot that I can't touch it properly and if I disconnect the extension cord, the metal prongs on the MagSafe are hot as well.  I'm just checking here before I buy a new one because I don't remember if this is normal.  I don't know for sure that anything happened to it but there appear to be hairline cracks near where the extension cord connects to the MagSafe.  Replace?  
    As I'm writing, I feel like it's obvious the device needs to be replaced, but maybe this question will help others so I'll post it anyways

    It is better to take the MBP to the Apple store as soon as possible.
    This is not normal.
    May be the adapter has to be replaced.
    You can either return or exchange an Apple product within 14 days of purchase.
    Make use of 90 days of free tech support from AppleCare from the date of purchase.
    AppleCare:1-800-275-2273
    Best.

  • Very Hot Magsafe adaptor

    Hey guys i just got my MBP retina display today and when i needed to charge the battery i put the magsafe adaptor in and after awhile(about an our i think) it got extremely hot and it had a very very light smell i work at an electronics retailer and i know it wasnt burnt out but it had a weird smell.
    1. does anyone else have this probelm
    2 could i just be a worry wort and this is normal
    3 by the feel of it it felt like 20 or 30 degrees celcius
    i hope my mac family can help me if i have forgot to leave any detalis or specs just holla and ill let you know
    ps i did all the nessasary updates before doing any of this
    Bazzakuda

    It is better to take the MBP to the Apple store as soon as possible.
    This is not normal.
    May be the adapter has to be replaced.
    You can either return or exchange an Apple product within 14 days of purchase.
    Make use of 90 days of free tech support from AppleCare from the date of purchase.
    AppleCare:1-800-275-2273
    Best.

  • Macbook PRo will not boot, MagSafe adaptor light does not work !

    Okay... so i have this issue with my MBP where it will not power up.
    The light on the magsafe does not show up at all when connected to the MBP. I have tried another magsafe but failed. I have not tried another battery so im not sure if that is wheret the fault lies.
    Ive tried the SMC reset holding the power button down for long, but still no result. However, i left the MBP disconnected from the magsafe and went out for the whole day. Came back, connected the magsafe and thought id try again. I held the power button for 10 seconds and the MBP started booting. It wasnt the normal boot im not sure if it was performing some sort of safe boot, but it was doing something, the screen turned transparent white, restarted and i could finally log in. The battery was very low so i left it on charge with magsafe.
    One thing i have noticed is that sometimes i wont get the light showing on the magsafe but it may still be charging at that point.
    This morning i wake up and its the same issue all over again. It must have stopped charging or something as i left the MBP on with magsafe connected. Now it will not turn on no matter what i do.
    If i tilt the magsafe connector at an angle i can see a dim green light but then id have to hold it in that place to see that light.
    Please advise on what i should do next. Excuse the long story !

    Hi s.cheslik,
    It seems your MacBook Pro will not boot properly and it displaying an error message. Based on the information you have provided, it appears your MacBook Pro needs to be serviced. The following link should help you get started with the process and has links with additional information on topics such as warranty and service pricing, battery replacement, and express replacement service.
    Apple - Support - Service Answer Center
    Thank you for contributing to Apple Support Communities.
    Take care,
    Bobby_D

  • Magsafe Adaptor Broken, Again.

    My last magsafe adaptor broke, and I got it replaced for free (Out of warranty) due to it having a known problem. Now, the replacement in just over 4 months has given away, and won't charge. It's the exact same thing that happened to my last Magsafe adaptor whereby the Adaptor slowly went, where at first you had to hold it within a certain position to get it to charge, and that kept getting worse, until it went.
    I've used it properly, following the apple guidelines, but it still went. I have the sheet from the last repair dated 23 August 2010, so I was wondering if I will get it replaced free of charge? I mean I see other people are having similar problems with this magsafe adaptor on the reviews section on this site, so it looks like the problem that you tried to fix, hasn't worked.
    Thanks for reading!
    EDIT: Sorry, i posted this in the wrong section.
    Message was edited by: Pieface876

    I had the burning magsafe sheath problem in 2008 and had it replaced out of any type of warrany by a really kind genius guy.
    Yesterday I went back for the same problem..but this "genius" said it was never a recognized issue. Since yesterday I'm looking for some way to prove them IT IS a known problem, there WAS a document (lost), and THEY probably gave me ANOTHER defected magsafe, as I use it very carefully.
    I found this thread here http://discussions.info.apple.com/thread.jspa?threadID=1782256&tstart=0&messageI D=8426183#8426183 but it links to the lost apple article http://support.apple.com/kb/TS1977?locale=en_EN which now redirects to the "Troubleshooting MagSafe adapters" page.
    Would this be enough?
    Can anyone help me retrieving that document?
    Thanx

  • MagSafe Adaptor works on MacBook Pro but not MacBook

    I have a MagSafe 60 Watt adaptor that will not work on any of our 1 year old Black MacBooks but will work on my MacBook Pro 17" and my other workers 15" MacBook Pro. Has anybody ever had this happen? I have tried it on at least 8 MacBooks and no go. Thanks, Billy

    Have discovered that the MagSafe adaptor also works on a white, but will not work on a Black MacBook. Apple replaced it but it still puzzles me.

  • My toouch smart iq506 is giving off the error message biohd-2

    my touch smart iq506  is giving off the error message biohd-2

    There is quite a discussion about the error message, its meaning, troubleshooting steps, and the results from last year on this forum. Please see:
    http://h30434.www3.hp.com/t5/Desktop-Operating-systems-and/Error-Code-BIOHD-2/td-p/299253
    It will offer some information and solutions for you.
    GeorgeFN
    GeorgeFN
    I work on behalf of HP.

  • Magsafe adaptor making a distinct high pitched buzz

    What the title says. Buzz coming from the magsafe adaptor. Usually when i first turn the power on, the buzz will sort of "sizzle", like an uneven buzz, then even out to the distinct continous uniform buzz. Any ideas?
    Cheers

    Run, don't walk to your local Authorized Service Provider. In the interim, you may want to change the duck-head for the extension cable (or vice versa) and see if that makes a difference.

  • Melted MagSafe adaptor

    Hey guys, my sister's MagSafe adaptor has started to melt toward the end where the cord joins the block, and it's starting to melt away at the plastic. I also noticed the cable itself getting VERY hot to touch, so there's a definite fault somewhere. I heard that Apple in America are replacing these dangerous power adaptors even outside of warranty, are Apple doing the same thing in Australia? Hope so.

    Print that page and take it into the Apple store. Don't leave without a replacement. Get a manager involved if you need to.

  • 3D CAD drawings for MagSafe adaptor

    Hi,
    I am looking for some 3D CAD drawings for MagSafe adaptor for all types of plugs for my project.
    Will appreciated if someone can show me the links.
    Thanks

    You have seen this haven't you?

  • New Magsafe Adaptor Issues

    I recently purchased one of the new Magsafe adaptors for my Macbook Pro as my old adaptor was beginning to fray. The new adaptor has already been experiencing the same issues my one-year old adaptor has. The charger refuses to charge unless you play with the cord to find just the right spot and even then sometimes it out and out refuses.
    The adaptor was purchased on April 18th, so it is well over a month old, but the adaptor shouldn't be doing this. Is this a defect in the item on Apple's Behalf? Will Apple do anything for me if I contact them?

    It's either a defect in the item or damage that you caused. If you've been disconnecting the cord by pulling on it, it's damage that you caused, and it won't be covered by warranty. No one but Apple can tell you how Apple will respond to your report about it, but if you could show it to an Apple technician (or an authorized service provider's technician) in person, you would have a far better chance of getting an immediate answer and perhaps an immediate replacement than if you have to report it to AppleCare by telephone. There is no way to do so by email, so don't waste any time looking for an email address.
    You haven't said where you are, but here's how to find the nearest AASP:
    http://support.apple.com/kb/HT1434
    And Here's AppleCare's US phone number, in case you're in the US:
    1-800-275-2273
    If you are elsewhere, look in your owner's manual for information about obtaining warranty service in your country.

Maybe you are looking for