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Leadex II gold low pitch noise

SuperFlower
By SuperFlower
in Power Supplies
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Posted

Hey guys, I have a superflower leadex gold II 650w for about 6 months now and noticed that I have a constant low noise of I listen very close to the psu even when the pc is off. When its on it goes on with the same low noise that can be heared if I put my ear near the psu.

I've seen the exact same noise from another 2 leadex silver 550w and 650w and a leadex I gold 650w. 

Is it something wrong? Should I worry? The psus works without any issue.

Summoning by @DatTestBench, @Stefan Payne, @GreatMasterAden, @Juular, @Elisis, @Maurice from Madagascar, @boghubodaghi @LukeSavenije

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Posted

It's probably coil whine and it's normal

Edit: wait, even when the PC is off? That's weird

MAIN PC:

CPU: Intel® Core™ i9-9900K Processor  Motherboard: Gigabyte Z390 Aorus Pro Wifi  CPU Cooler: Scythe Fuma 2  GPU: EVGA RTX 3080 FTW3 Ultra  RAM: Corsair Vengeance 32GB (4x8GB) 3000Mhz CL15

Case: CoolerMaster TD500 Mesh PSU: Thermaltake GF1 PE 750w Storage: 1TB Western Digital Blue 3D + 1TB Crucial P1 + 1TB ADATA XPG Gammix S11 Pro + 4TB Seagate Barracuda 5400RPM OS: Windows 10 Home

Headphones: Philips SHP9500s   Keyboard: Corsair K70 RGB MK.2 Cherry MX Red  Displays: Gigabyte M27Q (27" 1440p 170hz IPS), Samsung UN32EH4003FXZA (32" 768p 60hz TV)

 

SECONDARY PC:

CPU: Intel® Core™ i3-9100F Processor  Motherboard: ASRock Z390 Phantom Gaming 4-CB  CPU Cooler: Arctic Alpine 12 CO  GPU: EVGA RTX 3060 XC RAM: ADATA XPG 16GB (2x8GB) 2400Mhz CL16

Case: CyberpowerPC Onyxia  PSU: ATNG ATA-B 800w 80 Plus Bronze  Storage: 500GB Samsung 850 EVO + 2TB Seagate FireCuda SSHD 5400RPM    OS: Windows 10 Home

 

Former parts that I've used: Acer XG270HU, Asus Dual OC 2080, Gigabyte Aorus Master 3080, Gigabyte Gaming OC 3080, EVGA XC3 Ultra 3080, EVGA FTW3 Ultra 3080 Ti

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Posted

It's just the PFC coil vibrating.  Bus power is live even when the PC is off because it has to supply +5VSB.

 

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