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Im in trouble (MacBook won't power on)

A

Andrew32

macrumors newbie
Original poster
Aug 6, 2008
8
0
Ok, its midterm time and my mac book wont power on.

By wont power on i mean NOTHING. NO P{OWER going to the laptop whatsoever.

When i hook up the magsafe, it will begin to charge the battery, but when i hit the power button, the light turns green and then goes back amber to charge. This is the ONLY indication my pbutton pushing is doing anytihng.

Anyone got any ideas, im starting to tihnk i need to change the logic board...$500:mad::eek:
 
try it on mains power only - ie remove the battery - see how that goes
 
no go on taking the battery out. I tried that over and over again haha.

i forgot to mention the laptop turned itself off while i was surfing the web last ngiht. Since then it hasent come on. No shut down sequence,just turned off.
 
Andrew32 said:
no go on taking the battery out. I tried that over and over again haha.

i forgot to mention the laptop turned itself off while i was surfing the web last ngiht. Since then it hasent come on. No shut down sequence,just turned off.
Click to expand...
Sounds like something fried with the logic board. I hope you're under warranty.
 
Try reseting the PMU. If you don't know how, see the steps below.

Anyway, it most likely is a logicboard failure, which if you aren't under warranty, will basically mean you need to buy a replacement or pay the cost of a new MacBook to get your defective machine serviced.

Edit -

reset PMU...

1. If the computer is on, turn it off.
2. Disconnect the AC Adapter and remove the computer's battery.
3. Press and hold down the power button for 5 seconds and then release the button.
4. Reconnect the battery and AC Adapter.
5. Press the Power button to restart the computer.
 
Andrew32 said:
yea thats what im thinking. wow $500..... ARGGGGGGG is the power unit built into the logic board on the macbook?
Click to expand...

Yes, I believe so. Try the steps I posted above (particularly the PMU, it has the best chance of working), if they fail to work, you're going to need a logic board replacement.
 
I'd take MysticMage's advice first. You're going to want to try to get a diagnosis. Hopefully it's just the DC board at worst and not the logic board.
 
MysticMage said:
Yes, I believe so. Try the steps I posted above (particularly the PMU, it has the best chance of working), if they fail to work, you're going to need a logic board replacement.
Click to expand...

oops sorry, i ment to post taht i already tried that.

isnt the dc board just the magsafe?
 
MysticMage said:
Actually, I was wrong. There is a separate MagSafe section that can be replaced rather easily, although it depends on how comfortable you are with opening up your computer:

http://www.ifixit.com/Guide/Mac/MacBook-Core-2-Duo/Magsafe-Board/116/11/Page-1

Do keep in mind it may be a problem with the logicboard as well.
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I'd take it to an Apple Store if you can to get a diagnosis from an Apple Genius. Hopefully they'll tell you what's wrong before you spend any money on parts and repairs.
 
yea im thinking its the logic board. I just cant see the DC board/magsafe board causing all this. The battery charges and everything

Also, im comfortable enough to make the logic board swap myself.
 
bump to update*

took it to the local mac store. He thinks it is a logic board and i was going to use the MAC flat fee $250 repair service, but the guy looked and saw that i had called apple care about a problem when i first got the laptop and he said becasue i made that call the repair would be FREE even though the laptop is 1 and a half years old because the reason i called (laptop over heating and shutting down very easily) was symptoms of my mac 100% taking a crap.

APPLE IS SWEET. Even the $250 flat fee is better than buying a $400 logic board and doing it myself:p
 
Andrew32 said:
bump to update*

took it to the local mac store. He thinks it is a logic board and i was going to use the MAC flat fee $250 repair service, but the guy looked and saw that i had called apple care about a problem when i first got the laptop and he said becasue i made that call the repair would be FREE even though the laptop is 1 and a half years old because the reason i called (laptop over heating and shutting down very easily) was symptoms of my mac 100% taking a crap.

APPLE IS SWEET. Even the $250 flat fee is better than buying a $400 logic board and doing it myself:p
Click to expand...

Awesome, congratulations on getting the repair!
 
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