Mag Safe Light

When I first connect the mag safe adapter to the MPB, the light is very faint. Sometimes it doesn't appear at all. When I disconnect and reconnect, the light comes back on. Is this something I should have looked at?
Thanks.

Welcome to Apple Discussions!
If tapping on the collar affects the light, then very likely there is a wiring problem inside where you can't see it. here is an article that you might want to read:
http://support.apple.com/kb/TS1713
However, I would also be concerned about your battery swelling--this is a known issue, and batteries are not supposed to swell. You might find this article of interest:
http://www.apple.com/support/macbook_macbookpro/batteryupdate/
This article describes some of the characteristics of a faulty battery, and even if your computer is not one of the ones listed, it's still true that a battery that swells and becomes distorted is faulty, and you should be able to get a replacement at no cost. You need to do this right away, because the swelling can exert pressure from below and eventually cause damage. A swollen battery can also leak. So you really want to stop using it immediately.
Do you have access to an Apple Store? If so, you should be able to make an appointment with the genius bar and get an immediate battery replacement. At the same time, your power adaptor can be evaluated and likely replaced. But do take care of both of these problems right away--both have the potential to do great harm.
Good luck!

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    This didn't work for me, so I did a bit of searching and TONS of pages later in google, I found an answer. Here are the steps for people who also were in my situation:
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  • Replacing "T" Mag Safe Adapter

    Typically, I do not participate on these sorts of boards; however, I have had a pretty unfortunate experience today with Apple which I'd like to not only communicate but also seek help. As a preface, the city I live does not have an official Apple Store but only an Authorized Servicer.
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  • DOES MAG SAFE POWER ADAPTER WORK THE SAME AS A PORTABLE POWER ADAPTER??

    My power adapter broke, so I just purchased a Mag Safe power adapter. My computer works when it is plugged in, but it says that there are no batteries available, and it is not charging.
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    What exactly do you mean? There is only one AC adapter for the MacBook and it is a Mag Safe adapter, what are you refering to when you say portable adapter?
    Mort

  • HT3964 My MacBook Pro laptop doesn't charge. I have a brand new mag safe charger. Lap top was bought in 2012.

    I have a 2012 Mac book pro, also a brand new mag safe charger, until a month ago my laptop won't charge. Would appreciate any help. Ty

    Craig.A,
    have you tried resetting your MacBook Pro’s System Management Controller?

  • Is there lead in the Mag Safe power adapter's cord/cable?

    I was just wondering if there is lead in the Mag Safe power adapter's cord/cable specifically, and if there is any in apple's cords/cables in general. I couldn't find anywhere to email apple about it.

    I don't have specific information, but the power adapter is certified for use in the EU, and the EU has very strict lead-free requirements. Chances are the printed circuit board inside the power adapter also is manufactured with lead-free solder. Bismuth can be substituted for lead, though the resulting amalgam will have a higher melting point, so is harder to work with and increases assembly costs a little bit. Despite economic incentive to use lead, responsible manufacturing can avoid it.
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  • Any word on Mag Safe saftey issues from apple?

    Has there been an official statement or anything like that about the mag safe adapters? Cause it seems like the cases of melted/burned power adapters aren't going away. Just wondering what the "official" word on this issue is. And if there's anything special I should know about using my mag safe....ie. is it safe to leave it plugged into my computer for long periods of time?
    Seth

    "Not sure why or how it would happen other than abuse of the cable, not that I'm making an accusation or anything like that."
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