Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

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no light on adapter. not charging. flat battery.

no light on the adapter. battery is flat. have tried to

disconnect the battery,

reset left shift, command, option, start button 5 sec,

different power adapter,

what else can be done with a dead computer??

on thing interesting. if I plug an adapter on a computer that works, green light on. i remove this adapter and put it on the dead computer, the light comes on for about a minute then dims out.

is there a way to follow the current to see where is the faulty part?

thanks for your help.

Update (11/22/2015)

Yes when I press the button, only one light or all lights blink. This happens only if the adapter is plugged. If not there is no light at all.

but my problem is that there is no light at all on the adapter, so I cannot start the computer. Is there a way to troubleshoot this situation?

If the battery is dead, could that make that the adapter is not lighting and the computer not powering?

thanks for your help?


Answer this question I have this problem too

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is there a way to check the MagSafe DC-In Board. or what can i do to find out what blocks the charging.?


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1 Answer

Most Helpful Answer

Press your battery test button, it you get nothing or just one light it may be dead.

UPDATE 11/24/15


Use a multimeter to test the out put pins, On the right of this wiki is the pin out: https://en.wikipedia.org/wiki/MagSafe

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Yes only one light blinks or all lights blink when i press the button, but only if the adapter is connected. If the adapter is not connected no light at all when i press the test button. So it is clear the battery is either dead or empty, but my problem now is to get the charger to work. I tried different chargers and nothing happen when I plug it.


I checked the mag-safe adapter and it is good. I checked it also on other computers and it works.

so that means the current does not reach inside. Is there a way to check the board that support the mag safe plug.?


Time to replace the battery.


OK, I will try and let you know.


I got a new battery, installed it. 6 out of the 8 lights are on, but the computer does not start and there is no light on the mag-safe adapter. any other suggestions before i send the battery back?

I appreciate greatly your help.


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