Question 2 day old PSU just died

Oct 4, 2020
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Hi there,

So I purchased a new Corsair CV450 Power Supply, installed it on the Friday and was working perfectly for the weekend, but when I came to boot it up on the Monday nothing happened (No fans would spin, no beeping, literally nothing), which is exactly what happened with my previous PSU that died. I suspect that it is the electricals in my house as my PC is plugged into the same outlet has my old PSU and every now and then the lights in my room will dim ever so slightly for a split second, but I just want to know if something else in my PC that could be causing this.

The new PSU is still under warranty so it will be replaced, and I don't currently have a surge protector, but I will be buying one before I install the replaced PSU.

My specs are as follows:

Corsair CV450 PSU
AMD Ryzen 3 2200g
XFX RX570 4gb
1x8gb 2666mhz RAM

Thanks in advance!
 
Oct 4, 2020
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the PSU should be responsible for it

it´s also a cheap one and I wouldn´t use it. It´s not dangerous but not that good.
Unfortunately I don't have the budget for anything better.

So you saying that the cause is a poor quality PSU rather than a power surge?
 
Oct 4, 2020
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A little more background about your mains\region and the previous PSU would be handy. @jonnyguru
Sorry, but I'm not sure what you are referring to when you say "mains/regions" but if you mean what country I'm from, I live in South Africa.

My previous PSU was a very old Huntkey LW-6550HG 550W
 
Hi there,

So I purchased a new Corsair CV450 Power Supply, installed it on the Friday and was working perfectly for the weekend, but when I came to boot it up on the Monday nothing happened (No fans would spin, no beeping, literally nothing), which is exactly what happened with my previous PSU that died. I suspect that it is the electricals in my house as my PC is plugged into the same outlet has my old PSU and every now and then the lights in my room will dim ever so slightly for a split second, but I just want to know if something else in my PC that could be causing this.

The new PSU is still under warranty so it will be replaced, and I don't currently have a surge protector, but I will be buying one before I install the replaced PSU.

My specs are as follows:

Corsair CV450 PSU
AMD Ryzen 3 2200g
XFX RX570 4gb
1x8gb 2666mhz RAM

Thanks in advance!
That PSU should continue to work even if your mains voltage drops as low as 100V.

And a surge protector protects against surgest. Not brown outs. So that might not help either.

Let's make sure the PSU is actually dead. Can you jump the power on wire with a paper clip and get the PSU fan to spin? http://jongerow.com/PSU_test/index.html
 
View: https://www.youtube.com/watch?v=5FWXgQSokF4

Let's make sure the PSU is actually dead. Can you jump the power on wire with a paper clip and get the PSU fan to spin? http://jongerow.com/PSU_test/index.html
even for just testing if it´s really dead or not, I would suggest connecting a device like a fan or HDD to get some load to it before paper clipping it

@jonnyguru
the CV model (previously VS) should be a group regulated one and therefore I wouldn´t recommend it for such a system.
 
even for just testing if it´s really dead or not, I would suggest connecting a device like a fan or HDD to get some load to it before paper clipping it

@jonnyguru
the CV model (previously VS) should be a group regulated one and therefore I wouldn´t recommend it for such a system.
I am well aware of the topology of the CV series, thank you. I dare say I know every component inside the CV PSUs. ;-)

While I wouldn't pair up a CV450 with a PC with a discrete graphics card, it shouldn't just "up and die" either. The RX 570 isn't exactly "power hungry". It should still work.
 
Reactions: Juular
Oct 4, 2020
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Hey guys,

Thanks to everyone for the replies so far.

Here's just a little update:

I sent the PSU back for it to be replaced or fixed. I was aware of the paper clip testing method, but when I mentioned it in a older thread someone said that it is not always a reliable way of seeing if your PSU is in fact dead, whether this is true or not, I'm not sure, but I've got a warranty for the PSU, so I might as well use it and I also didn't want to risk damaging anything and voiding it, as I am not very confident in my skills. I should get the PSU back by latest next week and will post another update then.

Admittedly I should have done more research before making my purchase, but unfortunately I need to make do with what I have now.

@jonnyguru you mentioned the RX570 and the CV 450 isn't the ideal pair, but would they pose a threat to each other and my other components if I was to use them in my system?
 

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