This is part of a series for the Retro Challenge 2019/3.  Visit the index page for all the posts.

A much more productive day on the Retro Challenge.  I managed to fix one of my two broken Video Genie computers.  The Video Genie (aka System 80) is a TRS-80 clone which I grew up with.

Quite a few interesting diagnostic steps in this repair!  Watch this 32 minute video for the full story: