Hi everyone, I am experiencing some coil whine from my PSU and I wonder if I could try something to reduce or eliminate it (other than replacing the PSU), or anything else that I could test.
Here's what happens:
-There's no noise at all when I browse all the BIOS settings
-The moment Windows (also tried Linux) starts loading, the noise (slight electrical noise) appears.
-Once the OS loads, if I do absolutely nothing, there's noise (slight but perfectly audible).
If I start to move the mouse, the noise increases accompaning the mouse movements. That increased noise with the mouse happens with different mouses connected to different USB ports, even using PS2 mouse port. The noise also happens with no mouse/keyboard connected.
- If I start an AIDA stability test, the noise completely disappears once the CPU reaches 100% usage. The moment I stop the test, the noise comes back.
And what I've tried so far:
-A few days ago I tested that same PSU on the same PC case with a different motherboard+CPU, and I don't recall having heard that noise.
-I've used the current motherboard+CPU on a different PC case+PSU and I've got no noise.
-I've tested a different CPU, same noise.
-I've got the same noise with the CPU integrated graphic card or if I use a dedicated one
-I've disconnected all case fans and hard drives. And I still get the noise with a Linux live USB and no noise in the BIOS.
-Motherboard's 12V, 5V and 3.3V voltages shown in HWInfo seem to be fine.
-I've tried different power sockets (grounded) and also with a Salicru EMI/RFI multi-socket adaptor with EMI/RFI filter, and still have the same noise.
I bought the PSU second hand (so no warranty, that's why I'd prefer to try things before ditching it), and the first time I tried it, there was a horrible noise coming from the fan, so it was disassembled and got an oil drop on the fan (which fixed the fan noise). In that process a piece of transparent plastic that came inside was left outside by mistake, but I am being told that it's not important.
System specs:
-CPU: A10 6800k
-Motherboard: Gigabyte F2A88XM-D3HP
-RAM: 2x8GB G.Skill TridentX DDR3 2400Mhz
-PSU: Cooler Master RS-600-ACAB-M2
-PC case: Cooler Master K350
Here's what happens:
-There's no noise at all when I browse all the BIOS settings
-The moment Windows (also tried Linux) starts loading, the noise (slight electrical noise) appears.
-Once the OS loads, if I do absolutely nothing, there's noise (slight but perfectly audible).
If I start to move the mouse, the noise increases accompaning the mouse movements. That increased noise with the mouse happens with different mouses connected to different USB ports, even using PS2 mouse port. The noise also happens with no mouse/keyboard connected.
- If I start an AIDA stability test, the noise completely disappears once the CPU reaches 100% usage. The moment I stop the test, the noise comes back.
And what I've tried so far:
-A few days ago I tested that same PSU on the same PC case with a different motherboard+CPU, and I don't recall having heard that noise.
-I've used the current motherboard+CPU on a different PC case+PSU and I've got no noise.
-I've tested a different CPU, same noise.
-I've got the same noise with the CPU integrated graphic card or if I use a dedicated one
-I've disconnected all case fans and hard drives. And I still get the noise with a Linux live USB and no noise in the BIOS.
-Motherboard's 12V, 5V and 3.3V voltages shown in HWInfo seem to be fine.
-I've tried different power sockets (grounded) and also with a Salicru EMI/RFI multi-socket adaptor with EMI/RFI filter, and still have the same noise.
I bought the PSU second hand (so no warranty, that's why I'd prefer to try things before ditching it), and the first time I tried it, there was a horrible noise coming from the fan, so it was disassembled and got an oil drop on the fan (which fixed the fan noise). In that process a piece of transparent plastic that came inside was left outside by mistake, but I am being told that it's not important.
System specs:
-CPU: A10 6800k
-Motherboard: Gigabyte F2A88XM-D3HP
-RAM: 2x8GB G.Skill TridentX DDR3 2400Mhz
-PSU: Cooler Master RS-600-ACAB-M2
-PC case: Cooler Master K350