The fan on my xbox series x used to make a noise but now it doesn’t.

We can't help with self repair on the forums.

So usually when I play on my series s the fan makes a loudish noise....

The Series S, just like the Series X is designed to be quite, in normal gaming (even when play X|S optimised games) the Series S fan should not be audible. It should be pretty much silent.

Have you changed the location of where your console is located? These consoles get warm (hot even), this is normal. So their location is actually more important than hearing the fan spinning.

It doesn’t turn off by itself but the sound it makes isn’t like a fan sound, it sounds like your holding a piece of plastic onto a fan blade and it makes a rattling noise.

Hi, XBF Meryem R

Thanks for responding to my post, unfortunately I have tried a power cycle and factory resetting my Series X, but the buzzing/scratching/ticking noise still persists. The weird thing about it is, as I mentioned in my original post, my console never use to do this. I've also had the Series X since launch day 11/10/20 and it only started to do this fairly recently, close to a week now. My Series X on the top right side where the fan is, it makes a buzzing/ticking noise whenever I'm just using the dashboard, browsing the store, using Edge etc. The mechanical noises stop as soon as you launch a game, which is weird in itself. Usually coil whine happens during heavy loads like playing games that are demanding, but in my case it makes these noises when nothing is playing and I'm just on the homes screen or browsing around on the console. My console also makes a distinct static like sound when games are running as well, but it's not as concerning as the noises it makes when the console isn't doing any heavy workloads. With that being said, most coil whine comes from either the GPU or PSU, but the noise I'm getting is coming from the right side where the fan and vapor chamber/heatsink is. After putting my ear next to the fan and trying to pinpoint where the noise is coming from, I think it might be VRM or something to do with the motherboard around the CPU/GPU area. During the day you can't notice it unless you stick your ear next to the fan, but when I'm using the console at night when it's quiet, I can hear the strange buzzing/ticking. Anyway, I think there's something faulty or defective in my console and I'm afraid that it possibly might be a matter if time before it stops working.

My Xbox one X fan also makes a lot of noise but only when i play HDR games.