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Corsair CX-M Series 650W - Loud fan and noise under load


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So my PSU which is about 2 years old has developed some character!


Firstly it's started getting pretty loud on idle, now I can't say if this is new or not as this is the first time my PC build has almost been dead silent, however it is now the loudest fan at idle.


However the worse issue is under loud it makes an awful buzz noise which makes gaming without headphones an issue, so far I have:


- Cleaned dust from the PSU

- Remounted the PSU, ensuring all screws are correct and tight

-Flipped my PSU from downward facing to upwards


None have helped - this is something new as it's pretty damn loud and sounds like it's coming from the back of the PSU so not the fan.


Any suggestions?

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