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T430 ASDF JKL; keys not working

T430 and later, plus T530 and later series specific matters only
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baertracks
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T430 ASDF JKL; keys not working

#1 Post by baertracks » Fri Aug 10, 2018 6:52 pm

I recently purchased a used T430 laptop to refurbish for a colleague in Africa. Upon booting I noticed that the ASDF JKL; keys were not working. So...

1) I figured it was a bad keyboard, and I swapped in another keyboard (that was verified working). The problem persists.

2) I read somewhere that this might be BIOS related, so I updated BIOS on the laptop. The problem persists.

3) I read that it might be a problem with the keyboard ribbon touching something metal within the laptop, so I wrapped the ribbon with some non-conductive wrap. The problem persists.

4) I checked the keyboard driver in the "device manager." I had the latest version installed. I uninstalled it and rebooted to reinstall the keyboard driver. The problem persists.

5) What should I try next? Or is this something beyond my limited skills to fix?

Thanks! -FRANK

Utwig
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Re: T430 ASDF JKL; keys not working

#2 Post by Utwig » Sun Aug 12, 2018 4:39 am

Just a guess: could be someone flashed T430 keyboard controller to use T420 classic keyboard?
- try T420 style keyboard if you have one
- head to project git page and try flashing keyboard controller to stock
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Re: T430 ASDF JKL; keys not working

#3 Post by TPFanatic » Sun Aug 12, 2018 8:30 am

See if the connector between keyboard and motherboard is damaged or dirty... clean if possible. If the problem persists with two different keyboards I'd say it's a bad motherboard.
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baertracks
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Re: T430 ASDF JKL; keys not working

#4 Post by baertracks » Mon Aug 13, 2018 7:24 am

Thanks. I inspected the connector and it looks fine. I've cleaned and blew air on it. As you say, since the problem persists with two keyboards, it looks like this is a motherboard problem. The eBay seller has accepted to let me return the item for reimbursement.
FRANK

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