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Model A1418 / Late 2013 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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3.5 HDD 5V Sensor

iMac 21.5-inch Late 2013

New TechTools has a sensor test. My Hard drive comes back with zero volts and says the test failed. Any Ideas if this is truly a problem?

Update

I am not having problems. Running TTP 8 off of my main drive. TTP support had no answer. Apple Support had no answer other than take the IMac in for testing. I was just wondering if anyone had an answer before I lugged the iMac in for testing. I do have Apple Care.

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If you have AppleCare, get it in before it expires!

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Solution retenue

There doesn't appear to be a guide for the 2013 machine yet but there is for the 2012:

iMac Intel 21.5" EMC 2544 Repair

Is the machine running? Are you having problems? What version of TTP are you using? Were you booted from TTP or running off the hard drive?

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Our iMac stuff is a little confusing, since we title them by EMC number, EMC 2638 is the Late 2013 model. =)

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I have the same Problem and It seems pretty serious . Yesterday my iMac was slowing down and stacked at log in .

I don’t know what to do .

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Hello. I have the same problem 0V with 3.5 HDD 5V. Both drives are unmounted and I can not run my computer without external drive. After replacement of HDD I can use the iMac but there is still an error with the voltage. Pram/Nvram smc reset takes no result. Can anyone help me to solve my problem ? Right now I have two drives (ssd pcie and 2.5” HDD unmounted with my files stored on them) outside the computer.

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dannsh sera éternellement reconnaissant.
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