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‎10-08-2022 04:52 PM - edited ‎10-08-2022 04:52 PM

HP Recommended

I have a 17-s147cl laptop that has just started having a problem.

Keyboard keys CV, DF, ER, 34 (almost vertical double line) not working even after driver reinstalls, keyboard replacement, and a complete restore. Help

Category:
1 ACCEPTED SOLUTION

Accepted Solutions

‎10-09-2022 12:50 PM

HP Recommended
@cruisinfanatic wrote:

I assume that if cleaning doesn't help a repair shop is next?

Yes, it must be checked. Soldering work may be necessary.

 

Keep me updated

Good luck

View solution in original post

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17 REPLIES 17

‎10-08-2022 05:48 PM - edited ‎10-08-2022 06:14 PM

HP Recommended

Hello @cruisinfanatic 

Sorry to hear that you are having problems ... I would like to help you.

 

(1) Please check the keyboard ribbon cable and clean the copper contacts on the cable and on the jack (mainboard) "carefully" with isopropanol (or nail polish remover)

(2) Test keyboard using HP Diagnostics UEFI > Component test

(3) Please report your results

 

Information:

Maintenance and Service Guide

Component replacement procedures 41

 

Keyboard cable

ub6424_0-1665274423566.png

 

 

Kind regards

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‎10-09-2022 07:04 AM

HP Recommended

Last night I removed the ribbon and immediately saw there was debris on one of the contacs. I cleaned and success. Working again. This morning I start it up and back to the same problem. Cleaned again with no success this time

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‎10-09-2022 07:11 AM

HP Recommended

Hello @cruisinfanatic 

 

(1) You could try cutting the end of keyboard ribbon cable by 0.5-1 mm to change the position of the copper contacts in the jack.

(2) Test again ...

 

Kind regards

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‎10-09-2022 07:13 AM

HP Recommended

but it's a brand new keyboadr. You would still try that?

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‎10-09-2022 07:22 AM

HP Recommended

Hello @cruisinfanatic 

Send a picture of the copper contacts of the keyboard ribbon cable.

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‎10-09-2022 07:27 AM

HP Recommended

IMG_0058.JPGIMG_0057.JPG

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‎10-09-2022 07:32 AM - edited ‎10-09-2022 07:39 AM

HP Recommended

Hello @cruisinfanatic 

 

There is something wrong here. Take a magnifying glass and check all contacts in this area very carefully!

 

ub6424_0-1665322244888.png

 

? Is this the correct socket ? It seems to me larger than the number of contacts on the keybaord ribbon cable ?

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‎10-09-2022 07:37 AM

HP Recommended

It's a shadow. Looks all white and clean with magnifying glass

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‎10-09-2022 09:01 AM

HP Recommended

I assume that if cleaning doesn't help a repair shop is next?

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