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Electrical Fault

Discussion in 'Hardware' started by brsk, Jun 13, 2003.

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  1. brsk

    brsk Thread Starter

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    My PC stopped working whilst I was out. I had left it switched on and sitting with the desktop showing.I do not use standby or hibernation settings.
    The screen was black. Restarted but it didn't even go through POST.The hard drive powered up but that was it.
    When I stripped it all out the main power supply connector from the Enermax PSU to the GA-7VRXP m/board was badly burned on pins 19 and 20 (red wires, 5V) and looked partially melted.
    I have bought a new motherboard and PSU and will look at the old ones later but before I switch on the question is:- What caused it and what about the other components? Is the fault still there, lurking to strike again?
    Something obviously took alot of 5V current. What?
    Even if I start with the minimum number of components and add one by one it could maybe go pop when the faulty component is added. Could the Athlon cause it?
    Help needed, please.
     
  2. A Hawk

    A Hawk

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    If you've bought a new Mobo etc it might be wise to buy a new case/power supply. Or get the old one tested. Sounds like you might have had a power surge, might pay to get a good surge protecter while your at it.:)
     
  3. brsk

    brsk Thread Starter

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    Yes. I have a new mobo and PSU but the cause might be cards/CD rom etc?
     
  4. A Hawk

    A Hawk

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    Its possible I suppose, but it sounds more like a power surge to do the damage that you described.
     
  5. brsk

    brsk Thread Starter

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    Would that kill the mobo and the PSU everytime? Would it damage the CPU and other components?
     
  6. gws226

    gws226

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    Not neccasarily everytime... but there is a significant chance that other items on the motherboard were also subject to that power surge.

    I would think that the surge came from an outside source and due to a lack of/poor surge protector that it got through to your system board and did some damage. (I think the 5V is for the AGP and PCI bus so if the cause was internal then my guess its one of those items... but again I still lean towards outside events as the cause. Did you have a power outage or known spike... when the power suddenly comes back on like that there is a larger than expected surge in power that often cooks things... found that out the hard way.

    your definately on the right course here only putting one item in at time... there may be more damage. (n)
     
  7. sorrento5

    sorrento5

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    I had a situation like this occur although not at mobo connection. The computer was a few feet away from a window that was open a crack, but enough open to catch some rain droplets misting from thewindow. when I arrived home the power supply was gone and the CD rom was shorted.

    If you looked at the position of the computer relative to the window you wouldnt think that could happen ... but this storm was electrical and potentially this can always happen if you dont take precautions.
     
  8. brsk

    brsk Thread Starter

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    Just about to power up the new board. Will report results.
     
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