Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

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Intermitten LED #2 on Logic Board

I have a good working power supply. It has been tested as well as the logic board.

When I plug the AC plug into the electric outlet without turning on the system the #1 LED lights which it what it should do.

The fans keep starting and stoping and the #2 LED blinks off and on. Is this normal? When I press the start button it continue to do the same. Could there be an open circuit?

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Carefully disconnect the power switch connection on the logic board. Does the #2 LED stay off and the fans are not running?

You may want to run the diagnostics. With everything connected reboot the system and hold the D key did any errors pop?


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