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The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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Fan not working even after replacing

Hi all (Dan),

I have a MacBook Pro 2015 13" which has a fan that won't run. I have...

Put a known good fan in

Replaced keyboard and trackpad cable

Replied thermal paste

New SSD

Fresh install

SMC and PRAM

I used 'mac fan controller' which worked, the fan was controllable up to full RPM and all of the RPMs in-between, but the Mac just won't control it. I assume a faulty LB?

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@andyc7117 may be not a faulty logic board but a failed part in the fan circuitry. This could be related to an issue with either the Tach circuitry of the fan or the Fan Control circuitry. I would suggest that you start by checking the components and see what results you get.

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Copy the image to your computer since there will be times where they may have to disappear ;-)

If nothing else, let's see your logic board. Maybe somebody on here can identify any issues with it. Adding images to an existing question

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Thank you. It's started working again after (another) fresh OS install.

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Andy will be eternally grateful.
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