The incredible loud fan gave me no option but to open the PlayStation 4 Pro (PS4 Pro) and give it some fresh air. No more noise and working like new, my PS4 Pro is now good to go!
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If your PS4 Pro is still under warranty, for a great cleaning, voiding warranty is required.
The second batch of PS4 Pro is slightly different than first batch.
In this video is the second PS4 Pro, the first one has two seals and two security screws behind. Otherwise, they’re the same.
For a deeper cleaning including replacing the thermal paste, I have this video:
https://youtu.be/82V_kWSkgHA