My GPU blew up! how to check if this was cause by PSU

[Either]

Hello guys, first i want to tell you that i'm from venezuela so the electrical system isn't great, what i mean with this is that time to time the electrical power cuts every now and then and it's not a common thing but it happens.

I'm here to ask your help to check if my psu is the culprit of my GPU blowing up.

specs Motherboard MSI 970A-G45
2 x 4GB DDR3 1600 corsair vengeance
GX 750Cooler Master Power supply 80 plus
GigaByte Windforce R9 280 3GB GDDR5
AMD Phenom ii x4 955 Black edition


A few days ago i was playing dauntless on my Gaming pc i'm not sure if the pc turned itself off or it was a quick power cut that caused it because before it happened i was not on the pc so when i get back i see that the pc is off so i immediatly turn it on, in that moment the pc starts OK but 30 seconds later the gpu blow up in fire and the pc turns off again and then burn smells comes out from the pc, in that moment i disconnect the pc from the cord and i check if everythings was ok, sadly i realize that the graphic card suffered burn damage so i take it out to check it, i opened the graphic card and notice there was a chip on the power phase that was totally destroyed.
https://imgur.com/a/AlY0lKQ
https://imgur.com/4Rd2YaO
https://imgur.com/RXBQYqg
https://imgur.com/ZNkenPY
https://imgur.com/rvnWYMx
https://imgur.com/sYrJlmN

with pain in my heart i accepted the fact that my graphic card was gone and went back to the pc to check if something else was damaged so i connected the power cord again and turn it on and the pc starts ok but then the bios beeps with video card error. so in that moment i realize the damage was present only in the card so i installed a 8400gs i had old and the pc started ok and im using it now while making this post.

so the question is, how do i check if the problem is the PSU? how do i know if the psu is the cause of my gpu dying? the pc has been working like a charm this past 4 days without problems but the 8400 gs is a card that gets the power from the motherboard so there's no way i could say if the 6+2 pcie cables are in good shape(internally) also i check the conection between the psu cable and the card and it doesn't seem to be any damage in that area.

 

[Ketchup]

So how long have you had this card? Did you buy it new or used? The R9 280 has been on the market for 4 years, and I have had cards in the past fail in that amount of time or less. The fire, however, is not normal, and sounds like a power short. I would personally feel better with a battery backup with LLC between the wall and the desktop considering your scenario.

 

[Either]

I've had this card for about 3 years and a half and i got it new so yeah probably that's the case the thing is that i'm getting a new card soon so i would like to know that if it's safe to install a new card since i don't quite know what cause the short.

honestly i don't like to open graphic cards so i didn't clean the card in the 3 years i used. so i don't know if that could be the cause.

 

[Either]

So how long have you had this card? Did you buy it new or used? The R9 280 has been on the market for 4 years, and I have had cards in the past fail in that amount of time or less. The fire, however, is not normal, and sounds like a power short. I would personally feel better with a battery backup with LLC between the wall and the desktop considering your scenario.

When u say battery backup u mean a UPS? the pc has been working without problems so far with the same psu, so do you think it's safe to try a new graphic card?

 

[VirtualLarry]

the pc has been working without problems so far with the same psu, so do you think it's safe to try a new graphic card?

I don't know how other people feel about this, but I tend to be a bit more pro-active in replacing potentially "walking wounded" parts (well, if you can afford to, which is another way of saying, can you afford not to). I would replace or RMA the PSU as a preventative measure. Because the PSU is in-between the wall and the GPU, and if the GPU smoked, then the PSU wasn't doing its job, and therefore should be considered suspect as well.

That is, if you don't care about if you smoke another GPU, then go ahead and re-use it.

 

[Ketchup]

Yes. Go ahead and replace the power supply. See if it's under warranty still.