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2008년 10월 출시 / 2.4, 2.53, 2.66, 2.8 또는 2.93 GHz Core 2 Duo 프로세서

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MacBook Pro (Late 2008) Wont Turn on

I have a late 2008 MBP that will no longer turn on. The orange/green light on the magsafe connector lights up but nothing happens when I press the power button. I suspect its the logic board since OSX was often freezing prior to this and I had to hold down the power button to do a hard shutdown. I know there is another little board that the magsafe connector connects to, but since the magsafe connector is lighting up I dont suspect that. Just trying to pick some brains on here. Thank you in advance.

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

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I tried all the great advice and nothing worked. I replaced a new (refurbished) battery and it started. I knew the battery was dying on me but held off on changing it. I guess I needed a functioning battery to restart my macbook even though the old battery showed 100% charged and the power plug was in. Just wanted to leave my feedback to this great community of Mac users. Thanks guys.

I'm glad you fixed it! It can be tedious, grueling work. Must feel good.

There is this youtube video on a person who warmed up the keyboard with a blow dryer before starting. I now have to do that. Miserable but it is the price I have to pay to be cheap and hold off on upgrading my computer (AKA buy a new one.).

Ok here is the video:

https://youtu.be/IwG3mpMcscA

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선택된 해법

Mike: you may try and open the laptop up ( following the infix it guides) and disconnect the battery and power cord. Then press the power button for ten seconds, then put it back together and see what happens. Sometimes the controller locks up after a bad shutdown and those steps should reset it. If that doesn't do it, then let us know and we'll try to offer another suggestion or two. Good luck

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I saw that tip somewhere else and did try that with no luck. My MBP has a battery access door on the back so I didnt quite disconnect the battery but I just pulled it out for awhile and then put it back in, held down down the power button for 10 seconds and then reconnected the magsafe connector and still nothing.

Mike: it may seem trivial, but please try it again but hold the power button down with the battery out and power cord disconnected. Then put it back in and try it. Sometime the key is in the details.

Next step would be to look at the logic board for anything loose or signs of overheating.

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가장 유용한 답변

Try an SMC reset.

Connect the power adapter to the Mac. On the MacBook Pro's keyboard, hold down the Shift+Control+Option keys and the Power button at the same time. Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMC has reset.

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Outstanding! Worked like a charm. For those wondering, it did take a few seconds for it to turn on.

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I have the same Macbook that has been ‘dead’ for the last three months. I tried everything, SMC reset, power button held down while plugging the charger in, battery off, battery on.

Nothing worked until today when I tried something different: heat. Lots of it. I ran a hairdryer over the keyboard, top-case and bottom panel (battery cover removed) while occasionally hitting the power button. After heating up the bottom panel, I flipped it back over and tried the power again: success.

Hope this helps someone. I think the trick for this machine now is to never shut it all the way down or to hibernate.

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I went through every comment trying what people suggested and when I got to yours I said there’s no way this could be true. I grabbed my blow dryer and blew it at the screen for 2 seconds and poof it works like before thank you sooo much!!!

Incredible! this work. For me I had to heat for a few minutes, then I did the SMC reset and it works. This is not magic in fact. IT seems to be related to a deficient capacitor on the motherboard. https://www.youtube.com/watch?v=pvy-WrDd...

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Hello, i have the same problem. But i already try what you suggest…

there is some other things that i can try?

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Hello

it may be relative

but I was starting to think about taking the macbook late 2008 aluminium to the service center in the city I live.

I did several times all the steps shown in this link, but nothing worked.

https://support.apple.com/en-om/HT201295

What actually worked for me is the experimentarion of making the steps given in the link and also letting battery out, pluggin the magsafe to the laptop without a battery installed.

It is on right now, guess gonna see how it goes.

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Hello, the laptop is turning on normally but battery is not present, and it has turned on twice without hesitate.

I did the same magsafe with no battery and i started right up. Also when i did the shift+ crl +opt and power button the caps lock light turned green. What does that mean?

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I have tried it all. If I leave the laptop unplugged for a few hours, it might start normally but it will function for a few minutes/hours/days, whatever it decides, until the monitor shuts down and nothing can be done from there on.

Any help ?

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This actually works, it might not work on the first try but I did it repetitively and on the 3rd try it worked.

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Please help me what to do I have the same laptop please tell me what to do because the light of the MagSafe charger is lighting up so i am confused what is the problem

해당 답변은 도움이 되었습니까?

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@shahryaar - Its best to create a new question as people won't see it buried here. Give us as much information as you can on what happened. Install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question for starters.

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