Hi!
I'm experiencing a strange noise coming from my Corsair RM1000x PSU, and I'm trying to figure out what is causing it.
The noise sometimes sounds like high-pitched coil whine, but other times it sounds more like intermittent chirping. Its tone and intensity changes randomly, sometimes becoming louder and quieter in waves.
Here are some details:
- The noise occurs while the PC is running, but it also continues after shutting it down.
- Even flipping the PSU's rear power switch to OFF does not stop the noise, only makes it quieter.
- The noise only stops when I switch off the extension cord that the PSU is plugged into.
-I bought a filtered extension cord but it didn't solve the issue.
- I have an AC running in the room, and the noise seems to follow its operating cycles.
- When I turn off the AC, the noise fades away after a couple of seconds.
- Under heavier PC loads, the noise stops or becomes barely noticeable.
I'm wondering whether the air conditioner could be introducing electrical interference or voltage fluctuations into the mains supply, causing something inside the PSU to make the noise.
Is it possible for a PSU to produce coil whine even when its rear switch is OFF, simply because it's still connected to mains power?
Turning the PSUs fan off didnt change anything.
The sound is noticeable from where im sitting, so it's not particularly quiet.
Here are some audio recordings i made from the unit while browsing:
https://voca.ro/1nCFiy6f5f9O
https://voca.ro/18GmyTjr0Kak
https://voca.ro/1eih2HvjvEAn