Previous 1 2 Next 16 Replies Latest reply: Mar 20, 2013 4:35 PM by Ralph Landry1
darkhorse85 Level 1 (0 points)

I am using mid 2009 13" MacBook Pro with 85W MagSafe  . My operating system is Lion 10.7.4.


I heard a "click" coming from the direction of where my charger and just before and now its not working.


  • The light is not coming on the charger itself
  • No power is shown be coming into the computer on the Desktop toolbar either, nor does my computer that there's a charger plugged in.
  • I have tried the charger in a number of the different sockets around the apartment and still no joy
  • The transformer "block" is cold


Could this be a s simple as a blown fuse in the plug or something else altogether?


I need to fix this asap. No power = no computer. All help much appreciated.

MacBook Pro, Mac OS X (10.7.3)
  • clintonfrombirmingham Level 7 (30,000 points)

    Sounds as if you need to purchase a new MagSafe power adapter.



  • Level 8 (41,760 points)

    There is not a fuse in the charger and there is nothing inside that is servicable.  Take a look at clicking the apple in the left corner of the menu bar, About This Mac, More Info, System Report, Hardware, Power and you will see info on the battery, charge remaining, capacity, but what does it say about Charging, and if you drop down further under AC will be info on the charger, does it show there is a charger?


    It probably does not show there is one from the description you gave.  I would agree with Clinton that you need to get a new charger, whether at an Apple store or the on-line store.

  • darkhorse85 Level 1 (0 points)

    I've copy and paste info from under AC. The MagSafe charger is physically connected, the report says that is not connected and not charging.


    Any tips on where I can get cheap new Apple charger (60W MagSafe)?  Thanks to you



    Battery Information:


      Model Information:

      Serial Number:          9G9460Q108VNC

      Manufacturer:          DP

      Device Name:          bq20z451

      Pack Lot Code:          0

      PCB Lot Code:          0

      Firmware Version:          3

      Hardware Revision:          2

      Cell Revision:          100

      Charge Information:

      Charge Remaining (mAh):          1669

      Fully Charged:          No

      Charging:          No

      Full Charge Capacity (mAh):          4936

      Health Information:

      Cycle Count:          507

      Condition:          Normal

      Battery Installed:          Yes

      Amperage (mA):          -2244

      Voltage (mV):          10881


    System Power Settings:


      AC Power:

      System Sleep Timer (Minutes):          180

      Disk Sleep Timer (Minutes):          0

      Display Sleep Timer (Minutes):          15

      Wake on AC Change:          No

      Wake on Clamshell Open:          Yes

      Wake on LAN:          Yes

      Display Sleep Uses Dim:          Yes

      PrioritizeNetworkReachabilityOverSleep:          0

      RestartAfterKernelPanic:          157680000

      Battery Power:

      System Sleep Timer (Minutes):          15

      Disk Sleep Timer (Minutes):          10

      Display Sleep Timer (Minutes):          3

      Wake on AC Change:          No

      Wake on Clamshell Open:          Yes

      Current Power Source:          Yes

      Display Sleep Uses Dim:          Yes

      Reduce Brightness:          No

      RestartAfterKernelPanic:          157680000


    Hardware Configuration:


      UPS Installed:          No


    AC Charger Information:


      Connected:          No

      Charging:          No

  • Level 8 (41,760 points)

    That info pretty much says the charger has failed...the battery is in good condition but with only 34% charge left you need a charger fairly soon.  Battery condition of Normal is what you want to see, and the cycle count of 507 is decent for that year MacBook.


    The Apple store price, in USD, for the 60 w charger is shown here: macbook-and-13-inch-macbook-pro?fnode=5a

  • clintonfrombirmingham Level 7 (30,000 points)

    Just purchase a GENUINE Apple adapter - the third-party ones that you may find on eBay and Amazon don't seem to hold up too well. And if you've a 15" model, spring for the 85W adapter, the 60W if you've a 13".


    Any Apple Store or AASP should have them in stock... even Best Buy.



  • Level 8 (41,760 points)

    Not sure they have Best Buy in Liverpool, England


    That aside, I fully agree, and only linked to the 60w since that is what darkhorse mentioned.

  • Chamar Level 4 (2,105 points)

    Try Amazon.

  • clintonfrombirmingham Level 7 (30,000 points)

    I actually purchased a GENUINE Apple MagSafe adapter from the Amazon UK site for my old 2006 MBP. Why real Apple adapters are so cheap in the UK? I dunno...



  • Level 8 (41,760 points)

    Closer to China so transportation charges are less???


    Seriously, the message to darkhorse should be clear from the three of sure to get a genuine Apple charger and not a no-name charger.  It just isn't worth the risk.  We had a user during the last couple of weeks who was using a third-party charger, did some damage to the system and found out the power from the charger was really dirty and not according to spec.  A very expensive "saving" on the cost of the charger.

  • darkhorse85 Level 1 (0 points)

    I totally agree with you all, if the charger needs replacing its  got to be nothing other than a GENIUNE APPLE MagSafe charger.


    Sadly, I learned my lesson the hard way, my old PowerBook G4 had its Logic board burnt out because of that it even started zapping with little electric shocks. Ahh memories!

  • darkhorse85 Level 1 (0 points)

    I have discovered that the GB  MagSafe chargers (unlike the US version) do actually contain a circuit breaking Ceramic Fuse within the 3 pronged plug head. It's a 3A Bussmann BS 1362 fuse.


    It could be the culprit. As its  a ceramic fuse I don't know how to test it, any ideas that don't involve specialist equipment? 


    Many thanks

  • Level 8 (41,760 points)

    Testing requires a VOM - a volt-ohm meter so you can measure the resistance across the pins and from pin to tha socket at the other are looking for an open circuit, infinite resistance.  As long as the resistance is close to zero, you have an electricity carrying path.


    Any electronics repair shop can do that measurement, some electricians have VOMs, amateur radio operators usually have them.

  • OGELTHORPE Level 8 (45,065 points)

    Ralph Landry, greetings;  They now have these things called 'Multi Meters' that also measure ohms, volts, amps and some can even measure temperature.  But I have never seen one that can measure multi's.  Do you know what a multi is? 



  • Level 8 (41,760 points)

    A multi is a rare unit of electricity that can be measured but only by someone with a degree in electrical engineering :-)


    All one is trying to do is determine whether or not there is an electrical path don't even need a meter in reality.  Just a flash light bulb, a battery, and three pieces of wire.  Wrap a piece of wire, a stripped end, around the base of the light bulb and connect to one pole of the battery.  Another piece connects to the other pole of the battery and to one pin of the charger.  The third piece to the socket end of that same pin and then to the bottom of he light bulb.  If the bulb lights, there is a circuit through the charger plug piece.  Do the same moving the wires to the other pin of the charger plug block.  If you get light on both pins the fuse has not blown.  If you do not get light, the fuse has blown and you need a new plug piece with fuse assembly.

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