The April 2014 update of the 11" MacBook Air packs refreshed dual-core i5 and i7 Haswell processors and slightly increased battery performance.

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Temperatures and fan settings?!

Hello Guys

I had a water spills on my my MBA 11 and since cleaning the board etc. its in near working condition.

Two problems remain:

1. Power button does not seem to work, no biggie as I can get it to boot by plugging in the power cable and it automatically comes on. I have looked for shorting but cannot find it.

2. The fan will come on halfway though boot up at 6500RPM and stay that high! Using MacFan Control I can see the temperatures of about 34 - 40 degrees (CPU sensor) and the fan is still on 6500RPM.

I suspect the SMC controller is dead or damaged, certainty the Mac diagnostic tool suggests that its faulty. On occasions it will boot fine and run nearly silent at 34 degrees.

Maybe I need to use one of the other sensors to get the fan undercontrol?

Does anyone know or can provide a guide to sensible fan speeds for certain temperatures so I can turn down the fans and still be safe!?

Many Thanks.

Answer this question I have this problem too

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Hi i had the same problem i even format 20 times restalled el captain then even went back to lion soon as i switch it on fan running at 6500 very loud ..NEVER DID THAT BEFORE contacted apple my luck warranty gone.. they told me to restart computer press d .. it came back smc problem .. told me contact service centre they hadn't a clue .. they just cleaned it and give it back to me same problem as before .. told them they didn't fix it and wouldn't pay .. then they said i would have to replace motherboard 600 dollars .. i asked them to just replace fan sensor .. they say all they do on all machines is clean it and replace motherboard.. what a joke... so i search internet and found this https://www.tunabellysoftware.com/tgpro/ download the free trail set the fan speed and it work now mac running same as before without paying 600 dollars ... i know this will help as took me over week of head scratching lol

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Hi i had the same problem i even format 20 times restalled el captain then even went back to lion soon as i switch it on fan running at 6500 very loud ..NEVER DID THAT BEFORE contacted apple my luck warranty gone.. they told me to restart computer press d .. it came back smc problem .. told me contact service centre they hadn't a clue .. they just cleaned it and give it back to me same problem as before .. told them they didn't fix it and wouldn't pay .. then they said i would have to replace motherboard 600 dollars .. i asked them to just replace fan sensor .. they say all they do on all machines is clean it and replace motherboard.. what a joke... so i search internet and found this https://www.tunabellysoftware.com/tgpro/ download the free trail set the fan speed and it work now mac running same as before without paying 600 dollars ... i know this will help as took me over week of head scratching lol

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