Troubleshooting, repairing and improving the VIC-20 Diagnostics Cartridge and Harness that turned out to be broken in the previous video.

Previous VIC-20 Repair Video: https://youtu.be/2mWqV9K_0cI

Sven Petersen's VIC-20 Diagnostic GitHub: https://github.com/svenpetersen1965/VIC-20_Diagnostics

Tynemouth Software Blog about the Diagnostics: http://blog.tynemouthsoftware.co.uk/2016/05/vic20-diagnostics-user-guide.html

Sven Petersen's VIC-20 Super Expander II GitHub: https://github.com/svenpetersen1965/Commodore-VIC-20-Super-Expander-II

TIME STAMPS: 0:00 Introduction 2:10 The Symptoms 3:11 VIC-20 Diagnostic Information 4:20 Diagnosing the Diagnostic Cart 11:57 Making a PAL/NTSC EPROM 17:36 Why does the Keyboard show as BAD? 25:28 Reset Button & PAL/NTSC Switch 29:06 Thank you & Good night

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