PSU electrical noise, even low load

[Tech_Knife]

Hello Everybody
Afew days a go a friend gave me a 500w psu that he found in his garage. I got it and i tested it (I have a psu tester), and it turned on, it worked fine except a minor electrical noise, then I put it to my pc. Before putting in this 500w psu, I had a 300w. When I conected to the pc, pressed pwr button cpu fan spinned for a while but didnt turn on, Then I removed the gpu(20W) and tried again.Then it powered on, the noise was still there. I turned off, put the gpu in, and turned on. This time turned on with the gpu inside. Then I wanted to put on some load. I opened bo2 and started playing. After 10 mins one of psu caps exploded and pc turned off. After that PC wasnt damaged at all. I went to the store and bought 2 caps and replaced them ( bought 2 cause other cap looked defective too). I tested again with psu tester and the electrical noise is still there. And now I am a bit afraid to put it again the PC.

PSU Make: Winstar
PSU model:ws-atx-500
Tests: 5VSB= 5.1V +5V=5.3V +3.3V= 3.4V +12V1=12.1V +12V2= 12.2v -12V= 11.6V PING=346ms

 

[turkey3_scratch]

When you say electrical noise you are talking about voltage spike noise on the fluctuating ripple, correct? Not audible noise?

Why don't you get rid of that utter junk PSU and put in a PSU that is actually good quality. Also, did the fuse blow?

 

[photonboy]

Do NOT use this power supply again.

Either keep using your 300W or look for a new, quality unit. Here's one of the better, budget models:
http://pcpartpicker.com/part/antec-power-supply-vp450

 

[Tech_Knife]

When you say electrical noise you are talking about voltage spike noise on the fluctuating ripple, correct? Not audible noise?

Why don't you get rid of that utter junk PSU and put in a PSU that is actually good quality. Also, did the fuse blow?

No, isnt a spike and isnt a big noise its a continous noise that comes from the caps
The fuse didnt blow

 

[Tech_Knife]

Do NOT use this power supply again.

Either keep using your 300W or look for a new, quality unit. Here's one of the better, budget models:
http://pcpartpicker.com/part/antec-power-supply-vp450

U right but I hardly will be able to find any quality brands here in Albania, And here pc components cost twice as much as in USA

 

[Tech_Knife]

So u guys think that i definitely shouldnt waste more time on this psu?

 

[turkey3_scratch]

Yes but it's up to you.