Thanks for all the tips, LCD sensor fitted and iMac back in action.
I’ve had my LCD replaced on my iMac 27 / 2013 and there is no LCD Temp Sensor cable on the replacement screen.
I’m experiencing the same performance issues.
I’ve ordered a new sensor, do you have any pointers as to how to install it?
I have upgraded my 2017 iMac with a 500GB Crucial SSD.
The iMac is now painfully slow and struggles with the most simple tasks.
The Crucial SSD did NOT come with a thermal sensor and I did not install a third party one - could this be the root of the problem?
I’ve installed Mac Fan Control software which controls the fan speed no problem.
I’ve already replaced the screen as it broke during the upgrade and I’m reluctant to remove it again!
Any pointers greatly appreciated.