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new laptop keyboard not working


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#1 sys-eng

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Posted 04 July 2012 - 11:07 AM

My good friend's daughter has an HP G62 laptop that got wet with bottled water. After several days of drying, I put the battery back in but the keyboard was not working so I ordered a replacement. The small plastic retainer/latch/clip (cheap crap) that is suppose to hold the ribbon cable to the motherboard connector broke. I slid the ribbon cable into the connector, taped the cable in place, and powered it up. The new keyboard is not working though I believe the cable is making connection. Device Manager indicates the keyboard is working. System works fine with external USB keyboard.

Any ideas on what to look for next?




PS
My friend has explained to his daughter (recent college grad) that the caps are reusable on water bottles.

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#2 coxchris

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Posted 04 July 2012 - 11:35 AM

I did the exact same thing to my computer I know how its feels

I believe the only way to get it to operate is by a external keyboard because accidently broke a clip. I think the tape is on the contacts. Where did you brought it ebay or HP (replacement keyboard)

Do you have a warranty on it you can get it repair

I replace one that had grape juice

Hope that helps

You did do the right thing of letting it sit for 4 days

Edited by coxchris, 04 July 2012 - 01:20 PM.

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#3 Artrooks

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Posted 04 July 2012 - 12:54 PM

Hi sys-eng,

I had a similar problem on an older Dell Laptop; not sure if the connection is the same type on your HP.

On the Dell, the keyboard ribbon cable had contacts on one side only. The motherboard connection was a thin, builtup, rectangular slot with contacts within on one side. The ribbon cable slid into the motherboard connector and was held in place by a piece of plastic that slid down to create a wedge effect to hold the ribbon cable secure against the contacts. The plastic wedge had flimsy clips on each side and were broken off during removal. After that, the plastic piece wouldn't stay in place.

I couldn't get tape to stick and hold the cable securely enough but was able to fold over a piece of scotch tape so that neither side was sticky. Using a tooth pick, I worked the tape down into the rectangular motherboard socket between the keyboard ribbon cable and side of the socket that did not have the contacts. This created mild pressure on the ribbon cable so that it wouldn't easily slide out. Don't pull too hard or you'll regret it. It wasn't easy (I wish the ribbon cable was longer) but it worked.

Good Luck.

Regards,
Brooks



 


#4 sys-eng

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Posted 04 July 2012 - 03:22 PM

I bought keyboard from seller with Amazon store front and was listed for this specific model. Tape on the connector should not matter asit is above the contacts.

#5 sys-eng

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Posted 04 July 2012 - 03:38 PM

I placed the broken retainer clip over the ribbon cable and held it down firnly. I could then type some letters and numbers. Even with the keyboard unplugged, Windows Device Manager says "this device is working properly". LIAR!!! The damn thing is not even plugged in.

I will try shoving some plastic over the ribbon cable to create tension on the connector. Display screens have a very similar ribbon cable but use a metal connector on both ends. The manufacturers should use the same design on keyboards.

#6 sys-eng

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Posted 05 July 2012 - 12:28 PM

I removed the thick clear plastic pull-tab from the end of the ribbon cable for the old keyboard. I folded the plastic double and inserted it firmly over the new ribbon cable in the motherboard connector then taped both in place. Works great now and does not move at all even before being taped down.




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