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Model A1419 / Late 2012 / 2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac13,2

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4sns 1 c0000008 tl0p 124

Hi I am getting 4sns 1 c0000008 tl0p 124 hard test error. The CPU usage over 400%

Update (08/24/2016)

I have changed the hard drive and bought owc cable + sensor as u adviced

Update (08/24/2016)

ok thanks a lot Mayer jan ( SSD upgrade and kernel_task )

Отвечено! View the answer У меня та же проблема

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Did you change the hard drive?

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I thought I recognized you. Let's delete this question and go back to the original. There was a months lapse between what I advised and your response and I missed it.

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Выбранное решение

The problem was with the LCD sensor, no hdd sensor need for kernel_task problem. The HDD sensor is only for fans.

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Is the fan running fast and making very loud. If so, you make to reorient a wire. It is either a heat senser or fan sensor wire.I don't remember the exact name. It has white dot on the conector. You need to turn it 180* from how it was before installed your new hard drive. Infix it has a very good guide that explains it.

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There is a sensor cable on some iMac models that must be attached to the replacement HDD for the fans to operate normally. I do not recall if the particular models include your mid-2010 iMac but the symptom you describe would be consistent with this requirement.

If you did not buy it from OWC / MacSales or other well-known Apple supporter, it is unlikely to have the required hardware.

Check with OWC to determine the correct replacement you require.

It's an issue in your lower slot

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Has anybody solved this mysterie ??

I have the same behaviour:

4sns 1 c0000008 tl0p 124

And a kernel tast taking 300% CPU load

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You may find using this app will help in locating which sensor is failing: TG Pro See what it shows you.

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