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So, my iMac is finally working but there is one more thing. I replaced the SSD and there is no thermal sensor. These sensors are really expensive and my iMac is running like a G3 because of kernel_task of course. Is there a fix that makes the kernel_task think that the thermals are fine regarding the SSD?
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Sorry not really. Technically it’s not a bug it’s by design!
The system needs thermal sensors to control its cooling. So when you have either a damaged sensor or have something over heating you want the system to go into Safe Mode which is why your system is so sluggish.
Lets see whats failing if you can run the onboard diagnostics and tell us what the error message is. Restart your system and hold the D key to enter into diagnostics.
You may want to also install this great app TG Pro it give you a nice interface to see all of your thermal sensors and fan status. Take a snapshot of the main window so we can see whats happening and post it here for us to see Ajout d'images à une question existante
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I tried going into diagnostics and had it running for about half an hour with nothing more than a white screen. I posted a screenshot of TG Pro though.
OK, the fan is dead! Check the connection if it is OK then the fan is bad and you'll need a new one.
Oh no no, it really is not. I'm just using Mac Fan control to keep it quiet.
So you're cooking your system?? No fans, No cooling!
Don't use MacFanControl like that!!
I see so many burn't systems needing new logic boards like your actions, or the reverse burn't out fan's for people who ramp them to the max all of the time. There is a balance here you need to consider.
Get rid of this software and only use a turbo type of app like TG Pro offers. That way when you are about to push the system or when its hitting a settable threshold you can boost the fans not constrain or over ramp them.
Any yes you need the OWC inline thermal sensor in this series OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later
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