PSU buzzing when idle

JLarks · 5 Mar 2016 at 20:22

So recently my PSU (Corsair TX750V2) has started making a relatively quiet 'buzzing' sound when the computer is idle or just doing basic web browsing/video watching. The PSU appears to be working fine in regards to performance, no BSODs or anything to make me think it isn't performing optimally.

The sound is louder than the fans at passive, and is getting quite annoying. What is quite peculiar is that if I press against the middle of the PSUs grill (just to the right of where the power cable goes in) the buzzing sound stops immediately. When I load up a game or start a benchmarking program, the buzzing sound stops fairly quickly.

The PSU is quite old, I purchased it new back in March 2012. I would assume that there may also be a build up of dust inside of the device. I have not taken it apart or removed it from the computer to investigate.

Picture of the PSU in my case (please ignore my "cable management") - http://i.imgur.com/1ELGORi.jpg

What I am wondering is:

- Is this anything to worry about?
- Can I make the buzzing stop?
- Is this worthy of filling out an RMA?

Thanks in advance!

JLarks · 13 Mar 2016 at 13:20

I'm not really wanting to take it apart as it would void the warranty?

Could it be the fan? Also would you reckon an RCA is worthy either why?

JLarks · 14 Mar 2016 at 20:21

Danny75 said:
A video with audio, or audio recording, might help Corsair advise on whether to RMA it.

Sounds like a good idea, cheers.

JLarks · 24 Mar 2016 at 14:05

Thanks for the link Greybeard. Very informative read! I think I will see if it gets worse and go from there.

JLarks · 21 Apr 2016 at 09:58

Sorry for the bump here, but I wanted to give an update:

It appears that everytime I turn on PC (usually after turning off the power from the mains the night before) the PSU starts this annoying buzzing sound that starts quiet and gets louder. This lasts for about 10-15 minutes, and then it reverts back to a very quiet buzz/near silent operation.

Do you reckon this is still worthy or an RMA? I have had a look and I don't think that the PSU I bought (CMPSU-750TXV2WW) is being sold by Corsair anymore (in the UK at least), is this a problem?

JLarks · 29 Apr 2016 at 13:30

So I have started an RMA for this, just need to get my psu boxed up now. Corsair have advised they will replace it with a RM750x. I guess this should be a good replacement? Going to suck having no pc for 2 weeks though! (got no spare psu unfortunately)

JLarks · 29 Apr 2016 at 19:04

lee32uk said:
The RMx is an excellent power supply.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=452

Thanks for the input, I have been wondering whether this was worth doing (mainly due to me having to lose access to my PC for 2 weeks). But reading that link it seems I would be stupid not to!