Thursday, July 16, 2026

Heathkit IO-30 Oscilloscope

 July 16, 2026 - Picked this up recently and initially it powered on but only a single dot on the scope.  This evening I checked all the tubes to see it the heaters were working.  I removed a few and sprayed contact cleaner on them and reseated them.  I was able to get a solid line with nothing attached.  I hooked it up to my audio generator and was able to get a sine wave as expected.




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