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Model A1347. Released on October 23, 2012. Core i5 or Core i7 Processor. Apple Fusion Drive.

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Fans won't go on after ssd upgrade

I replaced my hard drive with a samsung 840 pro ssd and i turned it on and noticed it was silent i open the lid and the fan was not on. i have my mac on a notebook cooling pad for now.

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Install a Fan App - check the temperature (it may also tell you if a sensor is not reporting - though usually the default for that is fans on full power to ensure cooling). Try using it off the pad - if it's too cool the sensor wont trigger the fan.

If this Answer is helpful please remember to return and mark it Accepted.

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A link would be nice ;-)

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That's what Google is for - or Bing. This is DIY help...

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