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Welcome to the forum!
As far as your tester and the sets. Things get old and don't work as they sometimes should. Since you are getting the same symptom on both of the CRTs. I would suspect the tester is showing its age. If the CRT doesn't snap, crackle or pop, press on.
You have a found a wealth of information here. Don't be shy in asking.
And have fun.
Phil
Last edited by reeferman; 11-05-2020 at 09:57 PM.
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