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Released October 2008 / 2.4, 2.53, 2.66, 2.8 or 2.93 GHz Core 2 Duo Processor

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Why is my MacBook Pro A1286 Late 2008 can't turn on

Hi,

My MacBook Pro isn’t turning on anymore after a regular shutdown. MagSafe LED is Orange when charging then Green on full charge, battery is OK I have tested it on another A1286, the charge verify LED button is OK too,

I’ve tried to reset SMC, hold power button long time with MagSafe, battery, both ….nothing happens

I opened the case, disconnect keyboard then test power on with power pads, still nothing. It was working perfectly till then, If you have an ideas please …

Thanks in advance,

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Does the fan come on when you press the power button? Does the display has a slight shimmer to a slightly lighter grey?

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nothing, no sign of life ...

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I’m suspecting your logic board has died (CPU). Not much you can do other than replace it MacBook Pro 15" Unibody Late 2008 and Early 2009 Logic Board Replacement

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dead cpu after a single power down ... i think i have no other choices than change it ...thanks

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Hi,

I’ve fixed the problem by putting logic board in the oven for 7 minutes at 180 º Celsius, after waiting 30 minutes, reinstalled into case , it turns on.

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Sorry @jmg12 - You really didn't fix it, you only bought your self sometime ...

180 degrees is not hot enough to reflow the solder. Your resurrected system still has a bad tantalum cap that needs replacing.

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@danj actually 180deg C is equivalent to 356deg F and given the temperature tolerances on an oven it is pretty much within the ballpark of being a possibility to get it to melt solder. Why not let @jmg12 know which cap to change for a better repair?

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@oldturkey03 - Seven minutes wouldn't be barely enough time. There are a few possible caps that I've needed to replace over the years but without it on my bench I couldn't tell him which.

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jmg will be eternally grateful.
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