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Fcn Key (and speaker key) are locked

T430-T490, T530-T590 Series
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baertracks
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Fcn Key (and speaker key) are locked

#1 Post by baertracks » Tue May 18, 2021 1:21 pm

I am in the process of refurbishing a used T450 ThinkPad. I found that the Fcn Key and the speaker key are locked (lights on). No combination of FCN + ESC will turn them off. Also, all of the top row of keys (the various fcn keys) are non-responsive.

Now the microphone key (F4) is stuck on (lit up) When I hold down the FCN key and hit ESC, then the Windows start up panel appears (like hitting the windows key) Is this a keyboard problem? Or, is there a simpler fix? Thanks! -FRANK

UPDATE: I installed a brand new keyboard. (Boy, do I hate working with T450 keyboards!). The result, unfortunately, was the same, i.e. the FCN, SPEAKER and MIC keys are still stuck on (lit up). So would this mean replacing the motherboard? Or, maybe just using this laptop for spare parts?

-FRANK

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