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