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No Monitor Signal Unless Tower On Its Side

Discussion in 'Hardware' started by B3gbie, Mar 15, 2002.

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  1. B3gbie

    B3gbie Thread Starter

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    A friends pc (built by her dad so i've no idea what components) seems to have a loose connection somewhere internal or on the monitor cable (though im sure its not the cable-i've played round and it doesnt seem to matter) and the monitor only recieves a signal (reports no signal at all-so it doesnt even know it's plugged in) when the tower is on it's side-it's built in video (but an AGP slot is there too) on an intel board. Any ideas?
     
  2. griffinspc

    griffinspc

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    Well first you could tell her to lie on her side but that might get you a whack so I guess we better try an answer.

    It seems pretty evident that there is a hardware problem. First though, I assume when you said that you played with the connection cord you wiggled it.

    Those monitor cables have a set of very thin gold pins. I have seen a pin bent just a hair and be useless or intermittently bad. Try lifting up or pushing side to side or down on the point where the cable attaches to the video input to the PC in the upright position. BE VERY GENTLE.

    If that doesn't work open the case and see if any internal connections are loose.

    From your description I am unclear, do you mean that when the PC is upright there is no monitor activity including a power indicator?
     
  3. Byteman

    Byteman Gone but Never Forgotten

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    I have seen one PCI video card that was real loose in it's slot- whenever anyone bumped slightly or moved the pc, it would not boot. They brought it to me, and I opened it and spotted the loose card. The only solution, if a loose card is found, is to try different ones or move the card and see if another PCI slot might hold it in better. The screw was tight in the one I found, just the card's pins or slot itself was made funny.
     
  4. B3gbie

    B3gbie Thread Starter

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    The monitor powers up and reports no signal, implying there is no ground connection between monitor and pc, it's on board video, not PCI or AGP.
     
  5. Slithy Tove

    Slithy Tove Guest

    I hope no-one will suggest that you power-up your machine and then wiggle things. Even if you wiggle something with the power off and then turn the power on there is high potential for both personal injury and component burnout (if there is a short somewhere). Whatever you do - PLEASE be careful !!
     
  6. griffinspc

    griffinspc

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    B3gbie, from your description it would have to be the monitor cord connector (male end) and the only way to test this would be trying a second monitor, or -

    the other choice is the wiring from board to connector (female connector) at the PC which is more probmatical. As Slithy Tove suggests, shorts can be serious or at least have serious consequenses.

    Short of (no pun intended) experimenting with the wiggle factor, unless you have access to and the knowledge to use an Ohm meter so you can detect a cold solder or short you may be better off taking this to a shop and having it looked at.

    Sorry, no quick fixes here.
     
  7. ~Candy~

    ~Candy~ Retired Administrator

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    Does the monitor work on another computer?
     
  8. B3gbie

    B3gbie Thread Starter

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    I'll get the multimeter on it, thanks guys (Have to remember those physics lessons)-any idea of where I could get a wiring diagram showing what is what on the port/monitor.
     
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