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

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Will not power on, hear a slight fan sound but then nothing.

The machine was running, when I can back to my desk the screen was blank. I tried to power it on but nothing happened. Checked all the cords and removed all external devices. How do I test to see if it's the power supply or something else?

I replaced the power supply as instructed, but the machine still will not start. It sounds a little different when tiring to start, I hear what sounds like the HD spinning. Checked the LED test lights and still only the #1 is lit up.

Thanks

Ian

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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OK, I replaced the power supply but no difference. Maybe the hard drive sounds like its running?

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You need to take a look at the diagnostic LEDs. Take a look at this question for how to interpret them and location: Where are the diagnostic led's on this model's logic board

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Try using this guide but not disconnecting the cables yet. Just lean the display forward and see if you can see the LEDs. iMac Intel 21.5" EMC 2389 Display Replacement

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Do I remove the display first

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I can not disconnect the LCD thermal sensor cable connector from its socket on the logic board.Does not want to pull off. Am I missing something?

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I got the display cable off. Plugged the computer in. The only LED light that comes on is the #1. It stays on but that's it. Pressing the power button results in what sounds like the hard drive trying to start up. A couple of clicks then nothing.

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Ian Hurley zal eeuwig dankbaar zijn.
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