C128 Crystal Power - How to test crystals in circuit.

In this video we take at a method to use an oscilloscope to do a go/no-go type of test. This was discovered after a C128 I was working with dies right before my eyes. Imagine my surprise when I found the crystal had died.

We are of course performing this test with the C64 powered OFF.

I made use of the techniques we have covered so far in the ‘Troubleshooting Vintage Computers’ series to quickly track the problem down to a missing clock and then finally to a dead crystal.

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Credits
Chiptune Thing No. 3 "Victory" by Steven O’Brien   / stevenobrien  
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
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Music provided by Music for Creators    • Chiptune Thing No .3 Victory — Steven O’Brien