I tried a couple of times to make https://www.reddit.com/r/cuttingedgegaming/ happen, but never reached many people. This community seems to mostly folks playing 1-2 year old games, I wonder if there are more of us who are playing older (but not “retro”) games, particularly PC games?
If the fan itself is worn out you will need to replace it, broken fans make the wildest of noises.
Had it replaced. All good now!