MacBook A/C adapter not working - Problem is not adapter

Discussion in 'MacBook' started by JackP, Jun 3, 2009.

  1. JackP macrumors newbie

    Jun 3, 2009
    I have a MacBook 13" (not under warranty). When the charger is connected it does not light or charge the battery. I have tested the battery and charger on another MacBook and they are fine. I have reset PRAM and SMC. Cleaned both the charger contacts and the ones on the computer.

    Occasionally if I leave the charger connected to the computer for several minutes I get a faint flickering light (I cant even really tell if the light is green or orange or sort of both colors combined)

    My guess is that something has burnt out on the main logic board. I have the computer open and have found one fuse (F 790) that is in tact.

    Can someone with a service manual give me some test points and possible components (voltages, etc) to check.

  2. saligh22 macrumors newbie

    May 21, 2009
    I would suggest you to take it to a computer shop. It's risky to try to fix it yourself
  3. JackP thread starter macrumors newbie

    Jun 3, 2009
    I dont want to spend any money on it. I would prefer to try to fix it myself and if I brake it more I would rather spend the money on a new computer.
  4. Richard1028 macrumors 68000

    Jan 8, 2009
    It doesn't cost much to get an estimate. And if they can fix it at a reasonable price... sell the thing. Chances are you'll still come in much cheaper by selling a working macbook rather than just trashing it.
  5. core2duo macrumors member

    Apr 26, 2009
    It's going to be one of two parts:

    1.) MagSafe DC-In board
    2.) Logic board

    The MagSafe board is dead simple to install. It involves one screw, one connector and a little bit of fiddling with a spudger. The manual (and part) are available from iFixit.

    The logic board, on the other hand, is a much more involved repair. Not necessarily out of the league of an amateur repair, but it requires a good anti-static work zone (which you should have any time you're opening up your machine), thermal paste and the knowledge of how to apply it, a bin for organizing screws, and a few hours to set aside. Oh, and it's going to be fairly expensive.

    Good luck!
  6. JackP thread starter macrumors newbie

    Jun 3, 2009
    Thanks for your reply.

    Do you know "MacBook Magsafe DC-in Board" is just a a passive connector, because I am getting voltage into the laptop on the PC board side?

    Any ideas on what to look at on the logic board itself? Test points? voltage readings etc?

  7. JackP thread starter macrumors newbie

    Jun 3, 2009
    I just replaces the mag-safe board. Still no joy :(
  8. l.a.rossmann macrumors 65816


    May 15, 2009
    If you're not qualified to do it you'll make it worse and wind up spending more.

    The cheapest way to fix it is to bring it to a real shop.
  9. likemyorbs macrumors 68000


    Jul 20, 2008
    I have this problem with my unibody macbook. im going to go to apple before my warranty ends in october, its actually a really annoying problem because i plug it in to charge and come back an hour later hoping there's some battery power, only to realize it wasnt charging.

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