Coil Whine In PSU

Nightbound · Apr 8, 2013

Last night I randomly started hearing what I am sure is Coil Whine coming from my PSU (Its very high pitched and fluctuates in pitch depending on just about anything).

What could be causing this? There does not seems to be any specific reason, it happens during gaming and decent sized CPU/GPU loads, it happens when the computer is practically sitting idle as well. It comes and goes randomly, there seems to be no set pattern or time frame.

Basically just wondering if this is a PSU issue and it might need replacing?

Computer Specs:

Intel i7-920 (Normally OCed to 3.4 Ghz, running at 2.67 ghz atm to be safe)

EVGA GTX 680 (Pre-OCed EVGA Superclocked Model)

3x4GB G-Skill Ripjaws DDR3 1600

AsRock X58 Extreme MoBo

Cooler Master HAF X Case

Cooler master V6GT Heatsink on CPU

spigias · Apr 8, 2013

hi,
Poor quality capacitors issue,most times happens on psu's sometimes on mobos. if your psu is on warranty return it.

Nightbound · Apr 8, 2013

spigias :

It isn't under warranty atm, Its a corsair TX950W, i'm guessin i'm lookin at a new PSU most likely then? and if so any recommendations? i'd like to leave headway for another HD, Blu-Ray Drive, and 2nd GTX 680 possibly. And i'd prefer a modular design, again, assuming I have to replace it.

spigias · Apr 8, 2013

Nightbound :

a friend of mine has the same psu as you, wining for two years now. just crank up the sound

Nightbound · Apr 8, 2013

Any recommendations regardless? lol... Its annoying as hell... wont be a big deal really if i had to do it.

spigias · Apr 8, 2013

Sorry but i cant really suggest you to replace capacitors on your psu, is risky as hell. i think is better to buy a new one.

ps.
capacitors with wrong polarity are great rockets.

Nightbound · Apr 8, 2013

I wasn't planning to, i meant for a new PSU hehe

sorry if i was not clear.

ko888 · Apr 8, 2013

Coil whine is not due to poor quality capacitors. You only need ask the people who own some of the Seasonic X-Series power supplies that use all Japanese 105°C electrolytic capacitors and are afflicted with this problem.

Coil whine may also happen on the coils/chokes in VRM circuits of motherboards and graphics cards.

The coil/choke is a coil of wire wrapped around a ferrite core. If the core is loose it will vibrate at some harmonic of the PSU's switching frequency.

If the warranty on the device has already expired, I have heard of some people solving this problem by applying nail polish or hot-melt glue to the offending coil(s) to prevent the core from vibrating.

Coil whine is considered a manufacturing defect. Sometimes it's caused during shipping of the PSU to the end user. You really don't know if the package has been thrown around during its transport.

spigias · Apr 9, 2013

ko888 :

Coil whine is not due to poor quality capacitors. You only need ask the people who own some of the Seasonic X-Series power supplies that use all Japanese 105°C electrolytic capacitors and are afflicted with this problem.

Coil whine may also happen on the coils/chokes in VRM circuits of motherboards and graphics cards.

The coil/choke is a coil of wire wrapped around a ferrite core. If the core is loose it will vibrate at some harmonic of the PSU's switching frequency.

If the warranty on the device has already expired, I have heard of some people solving this problem by applying nail polish or hot-melt glue to the offending coil(s) to prevent the core from vibrating.

Coil whine is considered a manufacturing defect. Sometimes it's caused during shipping of the PSU to the end user. You really don't know if the package has been thrown around during its transport.

nail polish you said,interesting i will definitely try this out.

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