I bought a PS4 a few days ago second hand from an ad I saw on gumtree and am having a bit of a problem with the loudness of the fan. When Playing 'The Last of Us', the fan started to get very loud - however it was easy enough to ignore so I didn't think too much about it.
I then downloaded 'Everyones gone to the Rapture' and the noise of the fan rose to almost jet level proportions. To the point when I thought the PS4 would explode! I got a can of compressed air and cleaned out the vents, but this didn't make much of a difference. After reading some tips on the net, I decided to take the PS4 apart and reapply the thermal paste. This took a few hours and the old paste was pretty much solid. I replaced it with a pea sized amount of artic silver 5 after removing the old paste and ws pretty proud of myself. However, it doesnt seem to have made any difference at all.
Below is a youtube video with the loudness of the fan in its current state. I've tried positioning the console horizontally and vertically, and its even louder if it is horizontal! Wondered if anyone had any suggestions - any chance the fan is faulty and would replacing it help? Or anything else I can try?