Hi – I have a 2015 iMac which I have replaced the thermal compound for, turning it back on I note that the hottest part of the system is the sensor 'Back light controller proximity temperature' which is at 47C at idle. I am afraid to push it. Does anyone have any idea where this sensor is located? Along with the CPU and GPU compound I have just replaced the thermal pads on the VRAM and am concerned these new pads may not be performing as needed. Here are my current temps:
![imac temps.jpeg]( "imac temps.jpeg")