Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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Intermittent Failing of Main Logic Board

iMac won't start up to desktop screen and only loads up to white screen with apple in the beginning then reboots.

I sent it in for diagnosis at an Authorised Apple Repairer and they advised the following on computer:

- Blind CSD failed CPU core current on logic board. Suspect intermittently failing main logic board.

They would not repair it as they said that Apple no longer supplies parts for this older model.

What can I do to fix this problem and is it still possible to get parts?

I look forward to hearing from you.

Beantwoord! View the answer Dit probleem heb ik ook

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Thnaks for details. It did stay on. I must be the GPU. Much appreciated for advice.

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My guess is the GPU. Hold D when powering on and enter AHT. See if it stays on. If it stays on I highly doubt there is a issue with the CPU or CPU circuit. With a bad GPU it will pass the diagnostics...

GPU failure on this model is very common and the only solution is to replace the graphics card.

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davidzaoui zal eeuwig dankbaar zijn.
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