Latitude CPx J650GT keyboard issue

Discussion in 'Dell' started by Paul_in_NC, Oct 25, 2005.

  1. Paul_in_NC

    Paul_in_NC Guest

    Greetings alt.sys.pc-clone.dell Newsgroup,

    About a year ago I was given a used Dell Latitude CPx J650GT laptop. It was
    formerly a W2K machine (PIII 650MHz, 256MB RAM and a 20GB HDD), but I wiped
    the OS and installed XP Pro SP2. This trusty Dell has given me about a year
    of great service, but has recently started exhibiting a very bothersome
    behavior. For no reason apparent to me, several of the keys on the keyboard
    have stopped working entirely! And the keys that stopped working all ceased
    to work at the same time. If it helps, the keys that have ceased working are
    h, j, m, n, u, y, 6 and 7. This isn't an occasional issue where
    functionality comes and goes, it is a constant issue. As a temporary
    workaround I can plug in a full-sized keyboard into the PS/2 port in the
    back and can still use the laptop (via the plugged-in KB, the keys on the
    laptop still don't function properly). But how inconvient it that? To have
    to tote around a full-sized keyboard to plug into your laptop computer? As
    crazy as it sounds, I have done this very thing, more times than I care to
    tell!
    If anyone else has had an issue similar to mine, and has perhaps solved it,
    I would appreciate it if you could offer any insight into my delima and how
    I could possibly go about correcting it.

    Most sincerely,
    Paul Williams
     
    Paul_in_NC, Oct 25, 2005
    #1
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  2. could be the keyboard, the connection of the keyboard ribbon cable to the
    motherboard, or the motherboard itself.
    look for the documentation for your model on support.dell.com and open the
    service manual to see how easy it is to replace the keyboard. once
    unscrewed it pulls away form the system only tethered by a flat ribbon
    cable. i suggest that you reseat this cable (disconnect and then reconnect
    it). if that solves it then great, if not you could try purchasing a
    replacement keyboard... but it is possible that the connector on the
    motherboard itself is damaged and that can only be repaired with a
    motherboard replacement.
     
    Christopher Muto, Oct 25, 2005
    #2
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  3. Paul_in_NC

    ric Guest

    it's a hardware issue. good news is it's a really common and usually
    really easy to fix one on the CPx's.
    battery out, power off, power button held down for 5 secs to discharge.
    Flip it over, remove the 5 screws on the underside (not the ones under
    the rubber feet). Flip over and open laptop up. Prise up keyboard.
    It doesn't need much force, but it *does* need to come up vertically.
    Start with a flat blade screwdriver *very gently* on the right hand
    side of the keyboard until you can get a fingernail under it, then pop
    it up and out. There's a clip on the left hand side that just pops
    out.
    Hinge out keyboard and inspect ribbon cable. They're either push fit
    or unclip-and-slide-ribbon-into-slot type depending on age. If the
    latter, there's a plastic clip to lift up. Disconnect, blow fluff out
    of contacts, give a wipe down with lint free cloth and maybe a quick
    wipe with isopropyl alcohol and refit. Shouldn't take more than 5
    minutes...
     
    ric, Oct 25, 2005
    #3
  4. Paul_in_NC

    Brian Dean Guest

    Not sure if the list of keys isn't exactly the right for this to be a
    "numlock" keyboard setting...
    Some Dell bios and some Win XP commends turn on numlock without the user
    knowing...
    maybe worth checking into this a bit...
    Brian
     
    Brian Dean, Oct 26, 2005
    #4
  5. Paul_in_NC

    Paul_in_NC Guest

    Good news!
    Following Ric's advice (below) I was able to recover full keyboard
    functionality!
    Thank you very much.

    Paul
     
    Paul_in_NC, Oct 26, 2005
    #5
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