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#1
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4 pin 12v atx power supply connected the wrong way...
Hi... thanks to a distraction i ended up connecting the 4 pin 12v atx
power supply from the psu to the motherboard\cpu the wrong way... it was a 180 the wrong way... it sounded like a firecracker when i turned on the machine and it went dead.... everything else was connected right just that one stupid 4 pin 12v... what might've got damaged... would the motherboard only got damaged.... or the motherboard and cpu too... would other parts i had connected like memory, graphics card, hdd etc damaged too... thanks (it's an amd athlon 64 and asus k8v) :-( |
#2
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The power supply is the most likely thing that you blew up.
"Mike Henley" wrote in message m... Hi... thanks to a distraction i ended up connecting the 4 pin 12v atx power supply from the psu to the motherboard\cpu the wrong way... it was a 180 the wrong way... it sounded like a firecracker when i turned on the machine and it went dead.... everything else was connected right just that one stupid 4 pin 12v... what might've got damaged... would the motherboard only got damaged.... or the motherboard and cpu too... would other parts i had connected like memory, graphics card, hdd etc damaged too... thanks (it's an amd athlon 64 and asus k8v) :-( |
#3
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#4
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On Tue, 30 Mar 2004 15:04:03 -0800, Mike Henley wrote:
Hi... thanks to a distraction i ended up connecting the 4 pin 12v atx power supply from the psu to the motherboard\cpu the wrong way... it was a 180 the wrong way... it sounded like a firecracker when i turned on the machine and it went dead.... everything else was connected right just that one stupid 4 pin 12v... what might've got damaged... would the motherboard only got damaged.... or the motherboard and cpu too... would other parts i had connected like memory, graphics card, hdd etc damaged too... thanks (it's an amd athlon 64 and asus k8v) :-( Look for burned components on the motherboard. The firecraker sound was most probably a capacitor blowing up. The motherboard is probably toast. If the DC to DC converter went it might have taken the CPU with it, but there is a good chance that the converter sacrificed itself and didn't take the CPU with it. Your RAM is probably OK but if -12 volts passed through the CPU it could have taken out the RAM also. The graphics card is on the otherside of the bridge chip so I suspect that that's OK unless the AGP slot gets power from the 4 pin 12V connector. The disk and CDROM will be fine if that's any comfort. BTW isn't the 4 pin connector keyed? I would have thought that it would be impossible to do what you did. |
#5
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"Mike Henley" wrote in message m... Hi... thanks to a distraction i ended up connecting the 4 pin 12v atx power supply from the psu to the motherboard\cpu the wrong way... it was a 180 the wrong way... it sounded like a firecracker when i turned on the machine and it went dead.... everything else was connected right just that one stupid 4 pin 12v... what might've got damaged... would the motherboard only got damaged.... or the motherboard and cpu too... would other parts i had connected like memory, graphics card, hdd etc damaged too... thanks (it's an amd athlon 64 and asus k8v) :-( how did you do that...i thought they were keyed? |
#6
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"philo" wrote in message ...
how did you do that...i thought they were keyed? i thought so... that's why i didn't think twice about it once it slipped in and seemed to fit... on a previous motherboard there was only one way to connect a 4pin connector and that was the right way... on this asus k8v it seemed to fit in both the right way and the wrong way... i don't think it's the psu's fault... i think the thing on the motherboard is probably keyed too wide... |
#7
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kony wrote in message . ..
If the power supply meets the Intel ATX12V guidlines it should have turned off and not be damaged. If it's a cheap/generic power supply then all bets are off. The motherboard should be dead but most likely nothing else. okay... i used another PSU that i had... strangely it didn't work... but then when i used another power cable (from mains to psu) with that other PSU it worked... the machine ran perfectly, i formatted the HD, installed windows... everything was fine and perfect... so i came to the conclusion it was a 5a fuse on that cable that got damaged... till i decided to test the other PSU with the working mains-psu power cable ('cos it was a good psu)... it didn't work, and not only that, but when i tried to put back the working psu it didn't work either!... eventhough i connected it with the working cable... now i'm gonna go and buy some 5a fuses... i don't know if this will work... this is strange... but i was relieved and happy when the computer ran and i was able to run windows |
#8
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#9
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That firecracker sound you reported is troubling, something is likely damaged and ought to be isolated and repaired or replaced before the system is powered up again. A fuse blowing makes little to no noise. Fuses don't make any noise when they blow but capacitors do. If the cap was on the motherboard it will be obvious, look for a scorch mark. The cap might be inside the power supply in which case you'll have to take the supply apart to find it (I wouldn't bother, I'd just dump that supply in the trash). |
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