Hobbyist or repairer ยท for some experience
This C64 Mod Makes a Fantastic Tool for Testing Chips
About this video
A ZIF 64 diagnostic tool is built from spare Commodore 64 parts, then used to test some old Commodore chips for faults.
Good to know: Building the tool may mean desoldering and soldering: burns and fumes, and old solder contains lead.
Why watch it
The mod is a tester for Commodore chips, so suspect parts can be tried in a known machine. The Stone Collection video, where the chips came from, is linked.
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