Sinclair ZX80 / ZX81 / Z88 Forums

Thank-you for the welcome and the great information. It was some time ago I did my searching for a schematic. My bad. I found this forum and got a little excited, and posted without doing a renewed search to see if anything had changed. I'm glad I found you nice knowledgable Zeddy folks! The diagram...

Hello, new poster in Canada here. I bought the ZX81 kit when it first came to Canada in May 1982 and cost $150 plus taxes and separate power supply. My soldering skills were poor back then, but got the job done. 30 years on, that one has been Frankenstein'd in various ways, but still beats me at che...