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"Coil" Whine from Power Supply Suddenly

 
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post #1 of 7 (permalink) Old 05-14-2016, 05:05 PM - Thread Starter
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Hey all!
Thermaltake TR2 600W, almost 3 years old.
About 2 weeks ago I started getting a nasty whine when under load, tbought it might be my fairly new gtx 970 but I swear its the psu when I stick my head down there. Been getting a bit worse lately, now it will happen with some light browsing only while moving the mouse or scrolling. Tried running a stress test with OCCT and after about 2 minutes the squeeling stops but comes back on the way back to idle.
Some posts have suggested if you do a fulll hour burn it will sometimes solve the problem goig forward but I'm skeptical as i dont have any extra PSUs around right now if I kill it.
I believe I can rma it but I'm wanting to make absolutely sure its not the gpu. Any way to do that thats more reliable than counting on my ears? Thought about taking the gpu out and trying a stress test using the on board gfx, would that be a bad idea?

Thanks!

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post #2 of 7 (permalink) Old 05-14-2016, 05:12 PM
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After reading your post, I am certain the PSU is to blame as you've ran OCCT, which stopped the whine. That rules out a whine coming from the 970. The whine stops with OCCT because more power and voltage is being used, which forces the coils to vibrate far quicker than normal which will produce sounds so high they are inaudible.

Adding the 970 has changed the amount of power draw on idle to a level whereby the coils will be at their loudest (vibrating at such a speed that you can hear them). Either over/undervolt the 970 or replace either the PSU or GPU.

Edit: Or pour some hot glue onto the PSU coils, but that's usually a bad idea.

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post #3 of 7 (permalink) Old 05-14-2016, 08:50 PM - Thread Starter
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Thanks for the quick reply! Glad to hear some confidence about it being the PSU, I am fairly certain as well.
To be clear I've had the 970 for about 3 months and it hadn't been an issue, so maybe the noise is a sign of the PSU starting to fail?
I think it's too extreme to fix by over or undervolting the gpu as it seems like only 10% on the bottom or 10% on the top seem to not whine and the 80% in the middle is noisy.
Or I'll get drunk and try the glue. tongue.gif

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post #4 of 7 (permalink) Old 05-15-2016, 02:40 AM
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Which TR-2 model there are 3 of them? if you have the one called W0388RU you need a new PSU as its terrible.

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post #5 of 7 (permalink) Old 05-19-2016, 11:52 AM
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Coil whine is an aesthetic issue. Some part (transformer, inductor, magnetic choke) is vibrating a microscopic amount because it's resonating with the electric currents and fields running through the power supply. I don't believe the power supply is going bad. It's just merely making sounds as it gets older, like an old house floorboards creaking, or strange sounds coming from your grandpa.

Though if you have odors coming from the power supply, -thats- when I'd start looking for a new one. I've had a few whiny PSU's (and GPU's) but none of them were lemons.

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post #6 of 7 (permalink) Old 06-11-2016, 06:28 PM - Thread Starter
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Hey all,
Just thought I'd provide an update.

Tried to live with the whine for a bit but soon after my Asus mobo did an emergency shutdown due to a "surge" despite my power source being stable and using a suppressor/battery backup so I IMMEDIATELY rma'd this PSU and got ThermalTake to cross ship me a replacement.

New PSU is in and all is good. I'm glad the issues were psu snd not gpu related. NOW we wait and see whst happens when the defective unit gets back to them. There didnt appear to be an excess of debris or dust inside but i wasnt about to tamper with it to get a better peek.

Thanks again for all the replies.

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post #7 of 7 (permalink) Old 06-11-2016, 06:31 PM
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asus oversurge protection is garbage. i wouldnt rely on it.

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