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Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

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Why are my fans running at full?

I have recently had my Macbook in a repair shop (not the best idea clearly) and they swapped out my battery and keyboard.

Prior to it going there it was all working fine (aside from the keyboard - water damage), and the battery had reached the end of its life.

I've now got it back and the fans are at full as soon as I turn the machine on, the battery says not detected and doesn't work AND there is a kernal task running at over 100% CPU.

It's out of Apple warranty so they just say 'take it to a genius', but I know they'll charge a fortune!

Any tips??

Tried most things online - the only thing that slowed the fans down is SMCFanControl with the terminal commands, but this isn't practical!

Answer this question I have this problem too

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Lets get a better idea on whats happening here. Can you download this App? Temperature Gauge Pro it will allow you to see what the thermal sensors and what the fan is likewise doing. Post a screenshot so we can see it as well.

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No can do - not compatible with my version of OS. I formatted to Snows Leopard a while back when troubleshooting this problem.

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I was however able to get this with another app - http://i.gyazo.com/b21890ab9c4283a69dc29...

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Sorry ;-{ You can download the older version from the Apple Apps Store Temperature Gauge

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At this point the temps look OK, but clearly the fan is going too fast. I would start by swapping out the fan unit to see if the tach within it got damaged. If that doesn't fix it then you have a logic board issue within the SMC services. Luckily this could be an easy fix as either the trace needs to be patched (corroded) or one of the small caps or resistors is damaged or broken off.

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Do you have the needed tools to open and repair your system? This will require micro soldering and a good magnifier.

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Keyboards on Apple products do not die on their own. They stop working because of liquid. So the keyboard stopped working because of liquid, the same liquid that got to and corroded part of a sensor circuit on the board. :( Please stop the "I went to a repair shop and now it doesn't work because of them" crap. :( Please stop blaming repair shops for everything! This stuff makes me sad.

If this is an 820-2879 motherboard from 2010, find and run ASD 3S138. This will tell us which sensor is failing so that we can begin troubleshooting what is wrong.

My bet is on TS0P.

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