Question about Dell Latitude C640 Notebook

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Water spill on laptop dell c640

I have actually ripped in open. dried the parts and coupled it back. the problem now is that some keys on the keyboard do not respond, while some on being pressed adds another letter with it. example if i depress letter G, i get 'gr'

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I'm sorry to say this, but the water has killed your keyboard, and you will need to replace it. There's no way of fixing it, other than replacement.

Posted on Aug 23, 2008

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Posted on Jan 02, 2017

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The lowercase D key on my keyboarD Does not work.


Pop the key off - use the flat of a dinner knife and gently pry off; then use a cotton q tip and some Isopropyl 99% alcohol (at least a 70% solution) moisten the q tip and gently clean the upper plastic part and then the part that is still on the key board. Allow to dry - it dries very fast, clean the entire key - plastic and metal - a few minutes to dry and pop the key back on. You should always have a cotton cloth, q-tips and isopropyl alcohol on hand so you can clean any of your electronics safely.op the key back on and press it a couple of times.

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The letter Z key is not responding. I don't know how to fix it


Although having a laptop is certainly convenient, the all-in-one peripheral scheme (mouse, keyboard and speakers) can make individual repairs difficult, and a non-working keyboard can ruin the value of the entire package. However, there are some practical steps you can take to fix a laptop keyboard.

1.Diagnose the problem. When you press a key on your laptop keyboard, does it get stuck? Does the computer respond to your inputs? In almost all of these cases, the solution will lie in opening up your notebook's keyboard. However, to prevent extra work, press every key (do this in a word-processing program) and see which keys are affected. If every single key on a keyboard does not respond, you might have a software issue, which may require specialized help.
2.Clean the area around the keys that are not working. A damp lint-free cloth should be used to clean the surface of the affected keys. If you have stuck keys, use a Q-tip to clean under them, but take care not to pry the keys up, as this could result in further damage to your keyboard.
3.Remove the keys that are not working. Do this by grabbing some fingernail clippers and pulling out the hook-like fingernail cleaner extension. Use the small hook to gently pull the key up , which will expose a collapsible plastic hinge (commonly known as a key retainer) as well as a small rubber circular piece. Gently lift both of these pieces out of the keyboard.
4.Wipe the keyboard sensors clean with a dry cloth. The sensors are the little silver foil-like strips you see after your key components have been removed. Be very careful wiping these down--if they are damaged, they are very expensive to replace. Just gently dab it with a dry lint-free cloth to remove any dust/crumbs/particles that are interfering with your keyboard's functionality. Do not moisten the cloth with water or cleaning solution, as this heightens the risk for damage.
5.Reassemble and replace the keys. Simply fit the key retainer as well the little rubber piece together in the way you found them and then firmly press the key cap back in place.
6.Test your keyboard. Open a word-processing program and then press the replaced keys. If they still don't work, try restarting your computer, or activating a system restore point (to ensure that the problem is not software-related). If the keyboard is still not working, then you may want to think about taking the computer to a repair shop or replacing it altogether. (Keyboard repairs are very expensive.)

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If the 1 key pad is not responding, open the phone, get to the key pad.

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How about if you order your key from a key replacement company. I know a reliable one. They also have video tutorials on how to fix your key. Check out: laptopkey.com

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Hi,

Sounds like you solved it yourself. NEVER use a wet anything to clean electronics, water and circuitry were never meant to meet.

You will most likely need to replace the keyboard, that being said if you need to clean it again in the future use "canned air" compressed gas to blow out any dust and debris and if you must scrub it down, disconnect it from the computer first, use something like Monster Screen Cleaner then let it dry overnight or blow it out with the "canned air" then let it airdry for at least 4 hours before plugging it back into the computer.


Chris

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You have stuck keys from when you removed to clean. Remove the stuck keys and see if it works OK when you press the rubber cap instead of key
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