Model A1297 / 2.66, 2.8, 2.93, or 3.06 GHz Core 2 Duo processor

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MacBook Pro not turning on with or without battery

So, Macbook Pro 2009, 3.06ghz, duo 8gb, 17"

Not turning on when new battery in, or out, power board seems to be working, does the same with old battery still with some juice in it.

If I keep trying over and over it comes on and stays on until I try a restart or shutdown, sleeps fine....

HELP!

Update (10/25/2016)

OK so I have put my old Battery Back in its at "Replace Soon" so should be OK. Fans seem to be going a little fast and all the time.

So the new battery, really not making much difference there.

So once I get it started, its all good, not sutting down.

So what is it? Something to do with starting up?

Help!

Answered! View the answer I have this problem too

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Did you spill anything on it?

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Dont think so, but I have had it for 8 years so its possible! What would that mean?

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i think there can be issue in the motherboard .

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OK Lee thanx

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u think its defo the logic board?

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Chosen Solution

Connect the power adapter to the Mac. On the MacBook / Pro's keyboard, hold down the Shift+Control+Option keys and the Power button at the same time. Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMC has reset.

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Tried it not making any difference

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Here's link to the Apple Support document that talks about what @mayer suggests.

Reset the System Management Controller (SMC) on your Mac

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Tried it not making any difference

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paulnewhouse will be eternally grateful.
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