My iMac started making very annoying noises which is a known problem with the power supply. I opened up the iMac to check on it and found this: https://www.dropbox.com/sh/bbzq9cn1cy4xnlt/hQSGUgy4d2 Is that the way these things look like? Is the creamy yellow stuff some kind of thermal paste? Or is this power supply damaged? The iMac does still work, it starts making the noise when playing games and increases when i higher the brightness. Any quick help would be greatly appreciated!