Non-ADB keyboard repair

NeXT Computer, Inc. -> NeXT Black Hardware

Title: Non-ADB keyboard repair
Post by: eagle on January 10, 2018, 07:00:48 AM
Hi, all.

Anybody know how to repair a non-ADB keyboard?  The "R" key on my keyboard unfortunately does not work.  I'm trying to use drakar's NeXT-to-USB adapter, and it works great except for this silly "R" key issue. :)

Thanks.
Title: Non-ADB keyboard repair
Post by: barcher174 on January 10, 2018, 01:10:24 PM
You will probably need to replace the key switch if it's just one key. There are a couple contact points to desolder and then you pull it out.
Title: Re: Non-ADB keyboard repair
Post by: krazycat on January 12, 2018, 08:14:41 AM
Quote from: "eagle"Hi, all.

Anybody know how to repair a non-ADB keyboard?  The "R" key on my keyboard unfortunately does not work.  I'm trying to use drakar's NeXT-to-USB adapter, and it works great except for this silly "R" key issue. :)

Thanks.
Here you can find more pic of the internal key switch:
https://deskthority.net/photos-f62/next-non-adb-keyboard-t12259.html
The Alps key switches are very common, if I'm not mistaken you can use a Mac keyboard for spares (read at my link to see which keyboards are compatible).
Title: Re: Non-ADB keyboard repair
Post by: cuby on January 12, 2018, 08:44:33 AM
Quote from: "krazycat"
Quote from: "eagle"Hi, all.

Anybody know how to repair a non-ADB keyboard?  The "R" key on my keyboard unfortunately does not work.  I'm trying to use drakar's NeXT-to-USB adapter, and it works great except for this silly "R" key issue. :)

Thanks.
Here you can find more pic of the internal key switch:
https://deskthority.net/photos-f62/next-non-adb-keyboard-t12259.html
The Alps key switches are very common, if I'm not mistaken you can use a Mac keyboard for spares (read at my link to see which keyboards are compatible).
You should also be able to order new compatible ones from Matias http://matias.ca/switches/quiet/

I ordered some two years ago with the intention to build my own mechanical keyboard design (but never found enough time to design it) - so if anyone needs a single keyswitch, let me know (I'm located in Germany, so sending the switches overseas probably won't make too much sense).

-- Michael
Title: Non-ADB keyboard repair
Post by: paolo.bertolo on January 21, 2018, 11:27:58 AM
If it's not something mechanically broken with your keyswitch, I guess chances are good that - as long as you are able to de solder it - you can open and clean it with some dedicate product and restore its functionality by gently tweaking the leaf spring.
I did it today on some Alps switches from an old Apple IIe, from dead key to fully functional in a couple of hours.
Title: Non-ADB keyboard repair
Post by: eagle on January 21, 2018, 05:29:37 PM
Thanks, guys. I'll try to take a look at it sometime in the next couple weeks.

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