Model A1181 / 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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starts up with pressing power button, shuts down when picked up

Hi all,

i have just fitted in a logic board to my macbook. but each time i turn on the laptop it shuts down and starts making several attempts to start. it even starts up by itself without the keyboard in it. it also starts up by itself when i plug in the power cord. I have just bought this board but not brand new and i am assuming the board is in good condition as when i am able to turn it on it works for a while then shuts down. also shuts down if i touch it or pick it up or shake the table that it is on. i am thinking this might be an easy fix but i am not sure what to do anymore i have tried. reinstalling the board also tried putting new thermal grease to the heat sink. but still experiencing the same problems. Please advice if you can. Thank You

Answered! View the answer I have this problem too

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No, it is not the paste. All you need as far as paste is a thin and almost translucent layer over the cpu and gpu, not a glob of it. that will only cause issues in the longrun. The heat sync has different size screws for different locations when fastening, are you sure you are using the right screws in the right areas? If the heatsinc does not make proper contact with the CPU, it can cause the issue you are describing. The same thing happens to X-Box's with the x-clamps, the prelude to the three rings of death. I would make sure that you are properly fastening the heatsinc and that you are using the correct sized screws that correspond to the slots.

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thanks for your input. how do i know the correct sized screws? i seem to have mixed up all the screws in a small box.

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i've worked out the screws as i removed them from another macbook. but still the same problem. soon as i plug in the magsafe charger the laptop starts and then goes off

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finally given up as i think this is a fault of the logic board. fitted in another board the other day but it didnt have the same problem

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Hmmm, i would assume, The memory modules are not plugged in correctly. Try to Seat then again. It also might just be loose connector...

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i have tried re-seating the memory but still the laptop is still shutting down. however i noticed that when i press the heatsink down it starts and boots very well. i have added thermal greese to the heat sink but still the same thing. maybe there is something i am not doing right. please advice

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Perhaps, screws on heatsink are not right enough. This could be a symptom of overheating as well.

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Agreed +

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i have checked the screws and also took the whole board out and refitted it. but still having the same problem. i noticed that when i press down the heat sink the laptop works well. Could this be a loose joint in the board or maybe i need to add more paste? If its a loose joint would heating this up in the oven be of any good?

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Dontae will be eternally grateful.
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