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Thread: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

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    Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    I had fitted the CPU, fan, GPU into the case, and had performed several boots to the BIOS.

    In the fifth, a sharp BANG went off at the connection between the PSU and its cable to the mains. I did not have this connected to the wall with a surge protector, foolishly. Now no mains plugs in my room work and the rig does not so much as power up in different rooms.

    I presume the PSU is fried or at least fused, and I will need to refuse the mains in my room.

    Any input from experts would be appreciated. I will provide any clarifications.

    Edit: I have restored the mains in the rooms at the fusebox. I'm not touching the build until I get a better surge protector though.

    Clarification: This problem occurred after over 2 minutes were spent at the BIOS. This wasn't at the PSU being started up.
    Last edited by dudefellow; 21-02-2015 at 03:51 AM.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    That can't be right, what PSU do you have?
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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Quote Originally Posted by jay View Post
    that can't be right, what psu do you have?
    xfx ts650 650w

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    In fact, have the whole thing: http://m.imgur.com/pgVjRjN

    I was booting with just the stock cooler for the time being, though.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Check the mains cable for signs of damage. There should be a fuse in the plug of the mains lead, that is probably gone.

    You can usually smell where the damage is if something goes bang that badly.

    Oh, and surge protectors are in case something else is the surge, it won't help in this case.

    Power supplies have big capacitors in them to smooth out the power going in. Plugging in can cause what is known as an inrush, and the bigger the PSU the bigger that is. You may have just had an inrush big enough to trip the circuit breaker and pop the fuse (should just be 3 amp) in the mains lead. Have had that happen to me in the past, these days I try and get PSUs with power switches on the back and use that.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    I doubt a surge protector would have made any difference. From what you have said it sounds like a falure on the mains side of the PSU, possibly the input mains filter, or the switching regulator. It could be a fault in the mains cable.

    I am assuming you are UK based, with a UK fused plug. That fuse is probably 13 amp, which is too high for a computer. That said, the main purpose of that fuse is to protect the mains cable, not the equipment to which it is connected.

    If you are very lucky, you may only have lost the PSU. I certainly would risk using it again (at least not under controlled conditions).

    If you are unlucky, you may have lost other components.

    Is there any sign of burning of damage on the PSU?
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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    >Check the mains cable for signs of damage. There should be a fuse in the plug of the mains lead, that is probably gone.

    unfortunately I don't have a fuse tester right now. I will check it tomorrow.

    >You can usually smell where the damage is if something goes bang that badly.

    yeah something smelled wrong at the PSU, unfortunately I didn't pinpoint where and too much time has since elapsed.


    >Power supplies have big capacitors in them to smooth out the power going in. Plugging in can cause what is known as an inrush, and the bigger the PSU the bigger that is. You may have just had an inrush big enough to trip the circuit breaker and pop the fuse (should just be 3 amp) in the mains lead. Have had that happen to me in the past, these days I try and get PSUs with power switches on the back and use that.

    I'm unsure what to do, then. I can't just have a PSU that breaks every x boots or something!

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    >I doubt a surge protector would have made any difference. From what you have said it sounds like a falure on the mains side of the PSU, possibly the input mains filter, or the switching regulator. It could be a fault in the mains cable.

    I found this out from some google fu, but I think it's wishful thinking that I got a bad cable.

    >I am assuming you are UK based, with a UK fused plug. That fuse is probably 13 amp, which is too high for a computer. That said, the main purpose of that fuse is to protect the mains cable, not the equipment to which it is connected.

    You're right. I presume I need to take an extra precaution to protect and power a PC here. my error for using American tutorials...

    >If you are very lucky, you may only have lost the PSU. I certainly would risk using it again (at least not under controlled conditions).

    Presumably you mean 'not risk'. And yeah I'm not touching anything until I get a handle on what's going on.

    >Is there any sign of burning of damage on the PSU?
    nothing obvious, no.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Oh, and the fuse in the psu's mains plug was a 5a.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Sorry yes, meant don't use it again!

    5 amp fuse is good! However, regardless of whether that fuse blew or not, I'd still treat the PSU with suspicion until it is tested. Inrush is a possibility, although if there was a bang from the PSU, it suggests that the problem was caused by the catastrophic failure of a component.

    Was the PSU bought specifically for the build? If so, it might be worth returing it to the supplier.

    But you need to borrow or buy a new PSU to test the existing components of your build, and build the system gradually, testing as you go.
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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    >Was the PSU bought specifically for the build? If so, it might be worth returing it to the supplier.

    yep. Everything is completely new and built from scratch. I don't mind admitting I'm pretty upset by this, I thought I had done a good job researching on how to assemble a PC and I can't even plug the flipping thing in without it going wrong.

    >But you need to borrow or buy a new PSU to test the existing components of your build, and build the system gradually, testing as you go.

    Fortunately I live next to a Maplin outlet, so that shouldn't be too great a chore.

    Thank you for your input, this is something I had been looking forward to doing since starting work last August and I'd be heartbroken to have my stuff broken by a stupid electrical error.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    The plot thickens - I tried to register the component on the manufacturer's website, and the serial number, when entered, produces a different product.

    It is not impossible that this is a counterfeit component. This kind of thing is common, I understand.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Another update; the reseller, ADMI Ltd, has pretty bad ratings ( http://www.tech-pc.co.uk/forum/viewt...59443&start=60 , http://www.resellerratings.com/store...T_ADMI_Limited ). I should have done my homework on these guys.
    They even feature on this forum; http://forums.hexus.net/shopping-cla...shop-ebay.html , and the news ain't pretty.
    Now I'm really concerned that I've imperilled my entire build because I bought from a dodgy supplier. Damn.
    Last edited by dudefellow; 21-02-2015 at 02:26 AM.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    sounds like you could have some counterfeit equipment if the reseller wont replace the defective components I guess the next port of call will be trading standards and the small claims court to be compensated for your loses

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    Quote Originally Posted by eltel View Post
    sounds like you could have some counterfeit equipment if the reseller wont replace the defective components I guess the next port of call will be trading standards and the small claims court to be compensated for your loses
    I wouldn't be surprised. Since the serial code is coming up as a completely different product on XFX's website, I suspect this could be a refurbished product packaged up and flogged off as new. I've let XFX know what the score is and will wait on their report back.

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    Re: Ugh. PC assembly was going great, then explosion (fuse?) At PSU ruins everything.

    That model shows up as the P1-650G-TS3X on the GB site: http://products.xfxforce.com/en-gb/P...U/P1-650G-TS3X

    On the US and DE sites, also as the P1-650S-NLB9 = 2x model numbers. http://products.xfxforce.com/en-us/P...U/P1-650G-TS3X and http://products.xfxforce.com/de/Powe...U/P1-650G-TS3X

    I suggest you try checking yours on the DE site: http://www.xfxforce.com/de/home

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