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PSU may have fried MB


Varekai

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First let me pre-apologize if this gets a bit ranty. I've been without a PC for about a few weeks now, and now it seems it will be even longer, so I'm just getting a bit stressed. For my tax return I decided to build myself a new rig (now the fifth PC i've built). It took me a while to get all the parts, and I finally finished the build on March 18th. It ran great for 5 days, when my fiance was using it and it randomly shut down. It then rebooted itself and shutdown again, so I went to take a look. I pressed the power button and could smell a electrical burning smell. I looked inside the window of my case and could see through the back vents a the ax850 a bright red glow, looked like it was on fire. Contacted newegg they wouldn't help cause I didn't keep the box, so corsair RMA'd it. Finally received the new PSU today, 3 weeks later, and plugged it in. Start up the PC and all fans spin for about 1-2 seconds then it shuts down. I double checked all my connections, unplugged, replugged, changed surge protectors, tried plugging straight into the outlet, even tried with only the MB power connector, same thing. Instant on/off. Plugged it into my old setup which doesn't have a CD drive, GPU or PSU(or else I'd be using it) and the fans and everything run fine, so I figure the PSU is fine. So here's my questions: Is it possible there's something wrong with this new PSU, or is there a possibility that when the PSU went bad it took out the MB with it. I looked at the MB with a flashlight and couldn't tell visually if there were any burnt out parts. I bought all my components off Newegg except for the MB because it was considerably cheaper at the time on amazon, and amazon's site is stating that they will no longer replace the MB, and I don't want to run off contacting Asrock just yet. I also don't know if anything else may have got damaged like the CPU or GPU when the PSU caught on fire, and I don't have the money to take this rig to Geeksquad or somewhere that has equipment to test the components. I also don't know if Corsair has any form of a liability policy if it was the PSU that caused damaged to anything. At the moment tho all I have is a $1000 paper weight. tech support is currently closed so figured I would post on here for the time. Any help would be greatly appreciated.
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Is it possible there's something wrong with this new PSU, or is there a possibility that when the PSU went bad it took out the MB with it. I looked at the MB with a flashlight and couldn't tell visually if there were any burnt out parts.

You can test the PSU using the paperclip method found in the stickys under "brief PSU functionality test" But since it powers another system i would have to say it's just fine.

 

As far as the MB is concerned, it could actually go both ways. The original PSU could have possibly taken the MB with it, or , you just had a bad MB to begin with and the original PSU was fine.

 

That leaves you two choices really...RMA the board with ASRock or contact CS by phone and see if you could fill out a damage claim form. But usually they would want you to send in the parts that you say are affected by the PSU including the original PSU so it could be diagnosed to see who caused what issue. And that could take some time.

Corsair also has limits on what they will pay for damaged components and it may not be enough to replace the MB.

 

Really it would be best to just RMA the MB.

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Called amazon where I got the MB from, took a bit of talking because the MB was past the 30 day exchange period but I explained that I was waiting on a failed PSU that may have been the problem and since I am a Prime member they overnighted me a new one, everything is working fine now. Just curious what caused the problem originally, the PSU or the MB. When I got the new PSU in I got a new Belkin surge protector just to be safe that wasn't the problem.
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I'd say the psu bbq'd something on the mobo. same thing happened with a coolmax cug950 last nov. took the mobo, gfx card and hdd. was able to rma the psu and card, which had to be rma'd again but got a nice upgrade from an ati 6950 to a 7870.. whether it was the pru that caused it, or a sugre from outside, I have no idea
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