Damn you gravity, you win again!

February 21, 2007

My PC is in pain. If I switch it off, it spends the next couple of days making horrid noises whilst the fans readjust to running again. If I put it's case on, some component inside will almost immediately require assistance. I have to spray the fans with oil every few weeks (whilst they're running) or they slow down and everything overheats. It's all still working, but it's rather fragile hence I don't like to turn it off.

So imagine my frustration at knocking my clock off my table and into the open PC case. It's fallen way down inside and lodged up between a memory chip, the CPU heatsink and a mess of IDE cables. There's scary electricity in there - 240V and 30A (although not both in the same place). If I put my hand in there I'm betting it'll try and melt my wrist.

I suppose I could go fishing with something non-conductive. The clock is an akward shape though, and I might drop it on its way out causing more trouble.

Or I could live without my clock.


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  1. Ciz says:
    February 21, 2007 @ 20:00 — Reply

    Leave it in there. It's useless now it's fallen at speed, it'll be running slow because of special relativity time dilation. Only a bit slow, but slow enough to make you late for work. You could always run around the block so it can catch up, but who can be bothered? You can't turn off your PC, so use an online alarm clock instead.

  2. Matt says:
    February 22, 2007 @ 09:03 — Reply

    There shouldn't be 240V or 30A anywhere other than in the power supply (unless you have done something funky with mains powered fans etc). There should be a maximum of 33volts running around the motherboard/memory etc, so I don't think you or your priceless timepiece are in any real danger.

    I can probably find some standard pc chassis fans if you want some working ones.

  3. CMU says:
    February 22, 2007 @ 13:24 — Reply

    There shouldn't be 240V on the motherboard, yes. The story is funnier without that details of course. I'd expect a maximum of 12V for the drives. What runs at 33V?

    There may be 30A on the low voltage CPU lines. The PSU is rated around that but I don't know if the CPU draws it all. Probably not, realistically. I'm still not sticking my hand in there. If nothing else there's hot bits.

    The dying fans are the PSU fan and the graphics card fan. Neither is easily replacable that I can see. I turned off the rest of the chassis fans as without the case they're just not needed.

  4. Gavin says:
    March 13, 2007 @ 07:28 — Reply

    The CPU will draw 30A, at full whack - 100W(ish) / 3.3v = 30A. That's why you need all those fans.

    You know that water cooling is the proper answer :-)

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