I have same problem here (iMac 27 late 2009 Core i7 2.8 GHz), CPU fan at full speed
Long story short, SATA HDD connector at motherboard was broken, I managed to fix it but once it was assembled again, noticed fan problem
I’ve checked resistor R5797 is still in place and it meassures 47k (46.73 aprox) My first thought was about skin sensor, as pins went out of plastic when removed, but iStats says all temperature sensors are fine.
So… what would be the problem? I was really wishing it was a resistor problem, at least there would be something to start up, but now I’m clueless
I have same problem here (iMac 27 late 2009 Core i7 2.8 GHz), CPU fan at full speed
Long story short, SATA HDD connector at motherboard was broken, I managed to fix it but once it was assembled again, noticed fan problem
I’ve checked resistor R5797 is still in place and it meassures 47k (46.73 aprox) My first thought was about skin sensor, as pins went out of plastic when removed, but iStats says all temperature sensors are fine.
So… what would be the problem? I was really wishing it was a resistor problem, at least there would be something to start up, but now I’m clueless