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Old 5th December 2004, 01:14 AM   #1
fcel is offline fcel  United States
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Join Date: Sep 2001
Location: LA County
Default Laptop Computer Touchpad

- Sony Vaio laptop computer, Model No. PCG-F430.
- The problem is the touchpad does not work.
- I recently noticed that the touchpad does work at turn on. After it's on for more than an hour, the touchpad does not work.
- External mouse connected to the laptop always works.

Any idea how to fix the problem? Thanks.
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Old 5th December 2004, 02:14 AM   #2
r0cket- is offline r0cket-  United States
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Join Date: Aug 2003
Location: Portland, OR
Have you tested under any other operating systems to rule out the possibility of a driver or OS problem? I don't know if it has support for your Vaio's touchpad, but you might try booting off a Gentoo LiveCD or something of the like and see if you still have the problem. Otherwise, I'd suggest...

- Get whatever driver updates you can for the touchpad and chipset (you might check for any associated Windows updates as well).
- Disable any background/startup software.
- Disable whatever power management you can.
- Detach any other peripherals.
- If the laptop has a fan, make sure it is coming on at some point (if the unit isn't able to vent properly, some touchpad-related component may be overheating and failing)

If you're comfortable with it, you might crack the case open and make sure all the connections leading in to the touchpad are secure and unbroken. I presume the unit is out of warranty anyway, otherwise you'd be asking Sony these questions, but if you're going to go that route, find some instructions somewhere on how to get it apart, as they can be fairly fragile.
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Old 5th December 2004, 08:04 PM   #3
fcel is offline fcel  United States
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Location: LA County
I have tried disabling the power management and disconnecting all the peripherals and I'm quite sure that the fan is turning on at the appropriate time. It's not improving. In fact, another obervation I noticed is that the touchpad input gives jumpy cursor movements when the laptop is warming up (< 1hour on). After it's on for a couple hours, the cursor can only move horizontally, if at all.
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Old 5th December 2004, 11:54 PM   #4
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Location: Racine, Wisconsin
Open the case and check the ribbon connection to the mouse assembly.
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Old 5th December 2004, 11:55 PM   #5
jleaman is offline jleaman  Belgium
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as it being a computer laptop i agree. I do this all day " O ) check the cable.
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Old 6th December 2004, 12:08 AM   #6
fcel is offline fcel  United States
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Before I open up the case ..... you are saying that the ribbon connection to the touchpad is HEAT sensitive? Is there a possibly that the ribbon is broken intermittenly - just like those cable ribbon to the laser head in the CD player?
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Old 6th December 2004, 12:34 AM   #7
jleaman is offline jleaman  Belgium
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it's a sony any thing could be wrong : O )
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Old 6th December 2004, 12:51 AM   #8
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Join Date: Feb 2004
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Well, it's not software...

Crack it open and have a look. Like most service issues, it's usually something simple. Might have one of those little slider clamping connectors for the ribbon. Reseat it.
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