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2.2, 2.4, 2.5, or 2.6 GHz Core 2 Duo processor

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At certain positions of the lid, the MacBook shuts down, why?

Hello Everyone,

I did some research, sorry if I missed an answer, but my problem is quite specific. I have the early 2008, non-unibody model.

In the last weeks, I faced some random shutdowns, they were pretty odd to me, never happened before.

Most of the time it happened if I put the computer in sleep, left it like that for some hours, and when I opened the lid, it wake up just as it should, but 1-2 seconds after waking up it shut down completely. It seemed like it switches off when it's too cold (pretty odd, though). So I tried to put the MBP on the heating in the room for a couple of minutes before waking it up, and it worked quite well. Now I'm just switching it off before leaving home for safety reasons.

But, the other odd thing is, if I'm moving the lid slowly towards myself applying the pulling force on the left side, and push it back away a little bit, the computer shuts down instantly if I do this between 80-100 degrees.

Otherwise, when I get things going everything works fine, as long as I maintain the to keep the temperature around 55-60 degrees Celsius, and keep the lid at the same position.

My display hinges feel a little loose, too.

Can this be a contact failure somewhere in the left side of the computer? Could it be that the cold issue and the moving issue is because of the same problem?

I did take it apart more times to clean my left fan, is it possible that I didn't tighten the screws well enough and now something is moving in there?

What parts are on that side that could cause these shutdowns?

I'm not in the financial situation to take it to a service, I have to figure this out on my own (with your help, if I'm lucky enough).

p.s.: I did research the problem, but it doesn't seem to be a thermal sensor issue, because it never switches off when it's too hot, only is it's cold. Tested with FanControl.

Thanks in advance!

Best regards,

Bence

Answered! View the answer I have this problem too

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Chosen Solution

I agree with your assumption of a contact short from cables passing over, around, through the hinges (aka clutches). Torquing (twist/flexing) the case causes the short.

Leaving a screw head lose (up) could be the cause of a nicked cable.

Examine with a magnifier for cuts/nicks on the cables - perhaps a little electricians tape or some silicone can be applied to insulate the nick. If that's not successful a cable replacement should solve the problem (it's a major DIY project) at reassembly some lock-tight on the clutch screws should help keep them in place.

If this answer is acceptable please remember to return and mark it.

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1 Comment:

thanks for the fast reply, I'll disassemble it then (so unlucky that I have all the screwdrivers in an other country:) ), and comment again if I find the problem!

Have a good day!

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Bence will be eternally grateful.
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