I started on my new ZX-81 replacement board (kit) ZX81+38 - Page 3 - Sinclair ZX80 / ZX81 / Z88 Forums
I started on my new ZX-81 replacement board (kit) ZX81+38 - Page 3 - Sinclair ZX80 / ZX81 / Z88 Forums,203472 PCB Card_873387ed Module in Stock - 68a989109g1;ds3800hsqd1j1g