Macbook pro A1278 2011, 820-2936 random shut down issue

[roy.ruan]

Hi guys,I'm having this a1278 2011 with 820-2936 logic board.
everything is working fine, can pass ADT, but it has a problem with random shutdown.

there is no special symptoms that when or how the shut down would happen.
it just randomly shut down while using the machine.
it's not the heat related issue, I used temp monitor (software) to monitor the temps, almost everything is under 70C.

I tried to stress the video function and see if that's the cause, but not really, still random and not seem to be related.

just wondering if anyone had similar experience and know how to approach on problem like this?

thanks

 

[roy.ruan]

thanks for the help dude,I did check and re-solder but still same thing in my case, i think most likely that's not the cause, but thanks anyway for the suggestion