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

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iMac won't turn on

Machine wouldn't turn on, replaced power supply. Still not turning on. LED #1 blinks, then flashes on for about 1 sec then goes dark. This happens every time it's plugged in.

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I have tried 2 new power supplies, both with same result. Could this be logic board, or is something else in play?


Hi did you manage to fix your mac? I am having the same problem!


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recheck your connections, if no improvement then check the socket/cord and power supply again. Maybe you have another faulty supply.

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gofish will be eternally grateful.
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