Hi everyone.
There are some topics here (also on a lot of other places) regarding this issue, but I believe none has a definitive answer. At least I didn't see anyone saying it really worked for them.
In my case I have an iMac A1418 (late 2012) that the fan goes full blast (or at least ramps up the speed) after going to sleep or turning the computer off.
It's not a software issue, cause it was formatted and it happens with any MacOS version I test.
At some places people say it would be an issue with the S5 rail. Others say it's the S0 rail. And some others say it's an SMC or mosfet issue, and testing the fans with a control software would confirm that. If the fan speed is able to be controlled using software, it's a SMC issue. If it does not, it's a mosfet issue. In my case I see no difference when setting the fan speed to min or max, so I believe it would be a mosfet issue. Or driver issue?
Is anyone here 100% sure on what's the issue on these cases and can confirm the mosfet is the one in my case? If so, what's the correct component to replace on a 820-3302-A board?
Thank you.
There are some topics here (also on a lot of other places) regarding this issue, but I believe none has a definitive answer. At least I didn't see anyone saying it really worked for them.
In my case I have an iMac A1418 (late 2012) that the fan goes full blast (or at least ramps up the speed) after going to sleep or turning the computer off.
It's not a software issue, cause it was formatted and it happens with any MacOS version I test.
At some places people say it would be an issue with the S5 rail. Others say it's the S0 rail. And some others say it's an SMC or mosfet issue, and testing the fans with a control software would confirm that. If the fan speed is able to be controlled using software, it's a SMC issue. If it does not, it's a mosfet issue. In my case I see no difference when setting the fan speed to min or max, so I believe it would be a mosfet issue. Or driver issue?
Is anyone here 100% sure on what's the issue on these cases and can confirm the mosfet is the one in my case? If so, what's the correct component to replace on a 820-3302-A board?
Thank you.
