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Model A1297 Unibody: Early 2009, Mid 2009, Mid 2010, Early 2011 & Late 2011

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Lcd an Both fan replacement . wont boot , no chime

Hey guys i replaced my mac lcd an the 2 fans.

Since.replacement ive put back together an now will not boot.no chime .no light

have tried while connected to power

nothing

have tried PRAM reset

nothing

have tried SRAM reset

the led on the power changes from amber to green them back which according to apple it shoud if working properly.

Still wont boot.

Help help

Answer this question I have this problem too

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I think the answer lies in why you replaced all these parts. I'm betting on a liquid spill and there is other damage to the machine - likely the top case, in which the power on circuitry is found, and passes through.

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2 Comments:

Will cleaning with isopropyl bath fix this?

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Possibly - cleaning will not repair a shorted component, but if corrosion is causing problems removing the corrosion will solve them. FWIW the more time passes (and the more current passed through) the more corrosion takes place.

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