Question HP Omen Sequencer maintenance

Donnyyy

Prominent
May 26, 2021
84
1
535
I have couple of problems with a Hp Omen Sequencer.
(I hope this is the right place to ask this)

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1. There is a button missing the pg dn button as you can see in the image, I've searched everywhere for a replacemant but couldnt find one, is there a similar button that could fit in this place even blank that maybe i can buy in ebay?

2. There are three buttons that do not work the CAPS / TAB / HOME buttons do not work, i was able to make the caps button work for a few clicks but now it doesnt work at all, how can I fix them?

3. the left ctrl button works but it comes back up slow when I press it.

I'll really appreciate some help, hopefully a home fix. Thank you.