Very Good Article on C-64 BASIC TROUBLESHOOTING (longboard styles)

Disk drives, Monitors, SuperCPU etc.
banman
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Very Good Article on C-64 BASIC TROUBLESHOOTING (longboard styles)

Post by banman »

I thought I'd post this article on C-64 BASIC TROUBLESHOOTING.

I found it to be very helpful in narrowing down issues on faulty C64 mainboards. There are several articles on the internet that are similar. However this one I found to be easiest to follow.


C64_Service_Manual_314001-02_(1985_Feb)_.zip
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** Go down to page 2-1 **

C-64 BASIC TROUBLESHOOTING GUIDE

Follow thru the steps suggested.



Test equipment is required like a multi-meter and an oscilloscope. I managed to scrape by on a very cheap logic probe instead of an oscilloscope like this one for a long time.

https://www.aliexpress.com/item/4000388 ... web201603_


I conducted measurements without the Diagnostic Cartridge installed.


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