Weird Buzzing sound from power supply

[Usman Sajid]

I have a Delta Electronics GPS-450aa
I got it from my friend , he used it for few years but its in new condition.
I have a very low wattage pc
Core i5 2400 3.1
2 ram sticks
1 wd hdd @ 7200rpm
1 80mm fan
gtx 750 ti Oced.

So i get a really low frequency buzzing sound for 2 seconds and then it faints and again after 2 seconds.
Even under load there is same buzzing sound , it does not increase nor decrease.
Its not audible unless u put your ear right next to PSU.
Even when computer is off but power supply is getting power there is same buzzing sound.

Is there something to worry about.
Are delta power supply good?
Even if its old but very less used.

 

[colinut]

Power supplies are a pain in the ass.
I just changed the fan on mine (dangerous operation) only to realise that it was one of the capacitors that was "whistling".
I've now mounted it upside down in the case. Behaves.

 

[i7Baby]

Its probably rattling electrics in the psu. Delta Power supplies aren't know. So they are probably crap. Get a replacement eg Seasonic 520, XFX 550 or Antec HCG 520M

 

[Usman Sajid]

Delta Comes in Prebuilt it is well known.
I heard they are pretty good.

 

[Usman Sajid]

Anyone else?

 

[i7Baby]

Delta also sell these under the name Chieftec - http://www.xbitlabs.com/articles/cases/display/chieftec-psu-roundup.html

Chieftec are noted in http://www.johnnylucky.org/power-supplies/psu-lemon-list.html where the 650"Exploded during testing"

Most are not certified to 80plus.

I wouldn't use them.

 

[Usman Sajid]

Well many people told me that Delta makes good PSU's. If noise is not a big concern i would be reluctant to upgrade

 

[i7Baby]

Well buy another one. You know better than me. Good luck.