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Sorry guys for interrupting you but I kinda have a problem with my MacBook 820-2330-A.The machine shows green light but cannot power on,however when I press the power button and then plug the charger in the machine comes on but fans run at a very high speed and there is no backlight.I’m new to this stuff and I don’t know what to do…please someone help.
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That points to an SMC circuitry failure as what you’re doing to start it is an SMC bypass. It’s a logic board issue that needs in depth probing and a component level repair, or a logic board replacement, which would be more suited from a DIY approach.
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Hello Robert
I know it been long time ago.... but many people have your exact same problem and I hope you fix it already, otherwise you could see if your logic board has a C7771 330UF problem
on youtube there are many videos
normally as the same issues of 15/17 Logic board 2009 too
take care ciao
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