Question Weird noise with PSU

[georouv]

Hello , i would like to ask for any recommendation how i can specify what kind of problem there is with my psu. Whenever i do something that is pushing the limits of my pc like playing a new game , i hear my psu's fan starts to move ,and it is truggling to move,because i see it moving a bit slowly, with some weird sounds like it slightly touching on something like a metal.Also it does the same sound and move when i press the button of the psu that says it is for the hybrid mode . I am sure the sounds are from the fan of my psu,i have checked it also , i disassemble the psu from the case and checking really in depth if it was something blocking the fan like dust or a small obstacle but i did not observed anything,and and also clean it with air pressure.Any idea? Has anybody had a similar problem? Any way to check in other ways what is causing this problem?
The PSU is a Seasonic Focus 80Plus Gold 750Fx Fully modular
and the specs of the pc are:
a ASRock B450M Pro4 M/B
a AMD Ryzen 5 2600 Six-Core Processor 3.9GHz
16 GB RIPJAWS V F4-3200
and a Radeon RX580 8GB VRAM
In case i have plugged wrong some cables from the PSU to the components .
Thank you very much in advance

 

[Juular]

Stick a straw in the fan grille while the PC is off to stop the fan from spinning, if there's no noise anymore RMA it.