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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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Computer doesn’t power on

Hi- My old but reliable, until now, MacBook Pro won’t turn on. I hope someone can help. Here are the symptoms:

  • Magsafe adapter has no light, except if the computer has been unplugged with no battery for several minutes, the adapter flashes green one time when it’s plugged back in.
  • When plugged in, the 3rd battery indicator light from the front is green. The rest are off.
  • No other signs of life.
  • I tried resetting the SMC a few times following online guides. I tried letting computer sit unplugged without battery. I tried different Magsafe adapter. I tried different battery, although one I’m unsure if works. I tried with no battery.
  • This happened the day after replacing the battery and calibrating new one (from OWC). I called OWC who couldn’t help, said bad battery couldn’t cause other symptoms, was coincidence. I am returning battery for them to test though.

Could it be bad DC-in board? I read about that part here, but it’s not clear what symptoms would indicate replacing it.

I’d really appreciate any advice. Thanks!!

Answer this question I have this problem too

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What does the onboard battery checker tell you?

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With battery in, or when plugged in with battery out, the 3rd battery indicator light from the front is green. The rest are off.

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Have you taken this computer apart?

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Not recently. Replaced a fan about a year ago. Added memory a few years ago, and replaced HD with SSD.

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Is there a possibility that it could have shorted?

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As I mentioned, I did change the battery about a day before this happened. Maybe flipping it over accelerated a deteriorating connection breaking, or something else not quite right inside? I was pretty careful though.

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That seems possible, was the battery of good quality?

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Yes, from OWC. I’ve bought 2 previously from them which I was happy with. Of course it could be an individual bad one. I’m sending it back for them to test.

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Hi There

The fault is a Motherboard issue and it will require to be Replaced if it don’t work please reply and I will look into it further .

thanks

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Thanks. Probably buying new used computer. Don’t think it’s worth trying to replace motherboard or other trial and error with a machine this old.

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Cornfritter will be eternally grateful.
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