ZX Spectrum+ Keyboard Repair

This video is sponsored by PCBway. Only $5 for 10 PCBs and Only $4.98 for 3D Printing + Express 24 hour service on www.pcbway.com/ The membrane keyboard on my ZX Spectrum+ was damaged and I repaired by replacing the old worn off membrane with a brand new. ZX Spectrum is a family of 8-bit home computers from 1980s developed in the UK by Sinclair Research.
ZX Spectrum+, also known as Toastrack, was released in 1984. It features 48 KB, a new QL-style plastic case, a reset button which is a switch across the CPU reset capacitor. The keyboard is injection-moulded plastic keycaps, rubber layer below, membrane and a mounting plate.
Useful links:
Sinclair ZX Spectrum 48k+/128+ replacement Keyboard Membrane: www.sintech-shop.de/en/48k-12...
Sinclair ZX Spectrum 16K/48K: www.sintech-shop.de/en/48k-ke...
ZX Spectrum mechanical keyboard: www.pcbway.com/project/sharep...
Hackaday article about ZX Spectrum mechanical keyboard hackaday.com/2022/12/27/the-z...
0:00 ZX Spectrum+
2:11 New Keyboard Membrane
3:20 Membrane Replacement
5:55 Keyboard Test
7:32 Conclusions

[@AngelovaDesi]

Very cool :)

[@RetroWorkshop]

How was the bottom row of keys (arrow keys)? Tthe one I used (from a different supplier) required a very hard press for that bottom row to work.

[@LeonAnavi]

I don't have enough experience with ZX Spectrum keyboards to do a proper comparison. As you can see in the video I had problems navigating though the keyboard layout as I am not used to it. The bottom row works and I wouldn't say it requires a very hard press but probably still kind of hard so I don't complain.
Btw I watched your ZX Spectrum 48k video - you have done an amazing work :) I have one to repair here too. Again the membrane needs a change.