Power on/off HDD indicator and stuff

Discussion in 'DIY Computers' started by Richard, Mar 13, 2009.

  1. Richard

    Richard Guest

    I'm pretty sure that my tower case will phsically accept a decently modern
    mboard. It's designed to take full ATX size, the mboard in at the moment is
    a bit smaller than that length-wise, and it will, I feel sure, fit a minATX
    mboard. I'd have to get a new ATX PSU with the more up-to-date power
    connector for modern mboards.

    But something troubles me. The case (about 11 years old) has a mechanical
    on/off push button. Also a mechaical "sleep" push button. There is a LED for
    "HDD" and a LED for "sleep".

    I'm not sure if I need to post pictures of the wiring and plugs associated
    with the above, but anyway can anyone say whether I've got a major
    "difficult to solve" problem here concerning a mboard made say during
    the last 3 or so years? (I'm wanting to buy a mboard of about, well,
    say 2.0 - 3.0 Ghz speed, with PCIe, that could be used as a
    Richard, Mar 13, 2009
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  2. ATX was already well established by 11 years ago. Is there a mechanical
    connection from the switch to the PSU and the switch has 2 different
    positions for on and off (AT), or is it connected electrically to the
    motherboard and it has only one position other than when you're pushing
    it (ATX)?
    Tony Houghton, Mar 14, 2009
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  3. Richard

    Richard Guest

    It's definitely an ATX case and PSU.

    Here are pictures of the arrangement that allows the PC to be switched on
    and set to sleep:


    Would I simply plug those sockets into a modern mboard. or was that
    arrangement made obsolete? TIA.
    Richard, Mar 14, 2009
  4. Richard

    Richard Guest

    Richard, Mar 14, 2009
  5. Richard

    Richard Guest

    Richard, Mar 14, 2009
  6. Richard

    Richard Guest

    What is was is that I like the case of my (first) PC. So, I got the same
    base unit complete for £7.50 off Ebay with a view to putting in a moderm
    mboard in the second case.

    But, like you say I could have got a modern case + PSU for about £35.00! :c)
    I can still get one if need be. Unless I decide to pick up an inexpensive
    ATX PSU.

    Anyway, I thought I'd picked up from some posts a concern that the
    "arrangement" you see in the pictures was someway obsolete. Specifically,
    that mechanical push buttons were now not employed to control PC on/off etc.
    You have not mentioned anything being obsolete so I gues *in principle* the
    "arrangement" that I have is okay. So it seems I can use the "arrangement"
    using a bit of sense and having the new mboard manual.

    I now see that there are just three things on my PC facia connected with the
    "arrangement". A sleep function with sleep button with corresponding sleep
    LED, HDD activity indication with LED light, and the power function with
    power push button and power LED.

    I'm just wondering whether modern mboards still bother with sleep. If not,
    that sleep push button and the sleep LED would be redundant. I'd just be
    using HDD activity and power.

    Well, perhaps I'm sorted then. It looks like I can use that wiring and PCB
    you see in the pictures with perhaps a little modification on a modern

    I may still go for a new case but at least I know I can use the old case.
    You mean this?:

    Richard, Mar 14, 2009
  7. Richard

    Rob Morley Guest

    It's still a mechanical push button, but non-latching and controlling a
    low voltage logic signal rather than a latching switch for mains power,
    so just like the reset button on an AT case.
    Rob Morley, Mar 14, 2009
  8. Richard

    Rob Morley Guest

    I thought the problem with eMachines PSUs was sub-standard rather
    than non-standard components.
    Rob Morley, Mar 14, 2009
  9. Richard

    Richard Guest

    Hi. Non of the swithes latch, they push in and come out. What significance
    is this?
    Richard, Mar 14, 2009
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