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Repair guides and support for 27" Intel iMacs by Apple.

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Why doesn't my iMac turn on?


my 2010 27" iMac fails to turn on. I replaced the power supply thinking that was the problem but it still won't boot. When I plug the power in I see the 1st diagnostic light blink 2 times then it stops and nothing, no fans or anything. I tried a different power outlet, different power lead. I even used a different EMI FILTER.

All I get is 2 blinks of the 1st diagnostic board light.

Can anybody help me?

Thank you

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Bu iyi bir soru mu?

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Filtre ölçütü:

Try isolating the RAMs, Hard Drive and the WiFi Card.

If it still persists - it might be the logic board.

Bu yanıt yardımcı oldu mu?

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same thing i was gonna say, try removing one of the RAM , take it both out and try one at the time as well as try it on different RAM slot


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