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13インチアルミ製Unibody, 2.0 or 2.4 GHz Core 2 デュオプロセッサモデルです。

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MacBook will not connect or charge.

Ive had my Mac for a couple years now, A1278 early 2011 i believe, without any problems until a month or two ago. It began to stop charging. The magsafe would not light up at all and id have to pull it off and put it back in over and over, with a little tweaking and adjusting to get it to connect. two days ago it stopped completely. no matter what i try, i cannot get the charger to light up and charge. my computer is now completely dead with no hopes of coming back to life. i have also tried other chargers on it--nothing. the only sign of life is that the magsafe lights up [I]very[I] dimly, but only noticable in a dark room. i have also tried swapping batteries for a functional one. the functional one in my mac did the same as my original one--nothing at all. my original battery in a different mac connected and charged up fine. so it is not my battery or charger.

I ended up replacing the DC inboard--this seemed to solve the problem for about a week. but, alas, it is back to its original condition. I have also tried doing an SMC reset.

It seems as though sometimes when i plug something into my USB port, it starts charging....But its rare, so it could be a coincidence. Im wondering if Im having some sort of weird grounding issues somewhere?

any info, insight, suggestions or ideas would be gladly welcomed. oh, and i do not have the option of taking it to a store, due to my current location (a military base on the small island of okinawa). And apple, with their wonderful customer support, wants to charge me 20$ just to ask a question online. so i will try calling them but i dont see that working to my advantage. i pretty much can only order parts and attempt a repair on my own. thanks!

yes, I have asked this question before, but this is an updated one and I need the help ASAP.

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I agree with your diagnosis... the DC-in board seems the place to start. Get the proper tools (every job is easier with the right tools) keep track of your screws.

good luck,

If this Answer is helpful please remember to return and mark it Accepted.

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Well, for all those who are experiencing the same issues, here is my conclusion--that was the problem! I replaced it successfully, and it worked. BUT, there is a catch. darned electronics have a mind of their own. Not but 4 days after I replaced my DC inboard, I started experiencing the same problems again. I could not, for the life of me, get it to charge or connect. so, I went back into it, and disconnected everything and reconnected it, thinking maybe I hadn't connected the dc inboard fully last time. to my dismay, this did not solve it. I had nearly given up hope and was planning to take it to a repair shop, when I decided to plug it in one last time. And, of course, what do you know--it charged. And is still currently charging.

SO, would somebody please explain to me what on Gods green earth is going on here?! Im taking online courses for school right now and cannot afford to have a fickle computer. Thanks!

さんによる

Hi cmdillon

Maybe it has something to do with discharging the Book and so the SMC and PRAM was flashed.

I am not sure about, but I had an HP notebook and one day I plugged in the power chord of its power adapter and it blew off with a loud popping sound.

The notebook did not turn on anymore - not with a spare power adapter nor with the battery in it (fully charged).

I took it to a store next me. The technician came out, took out the battery, pressed the power button for half a minute, put in the battery again and started the notebook ...

Regards, Stone

さんによる

You could be having moisture/corrosion problems. I see you are on Okinawa... keep the laptop in AC... Try packing it in some desiccant like putting it in a foot locker filled with uncooked rice for a couple days... KEEEP THE RICE OUT OF THE MACHINE - cover the back/ports so that no rice gets inside (covering them with some paper wrapped/taped in place).

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cmdillon さん、ありがとうございました！
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