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What if there is a higher voltage at the test point holding the tube at full agc then the test won’t work using a 9 volt battery how would this setup lower higher voltage if that works that way. Or does it maybe need a certain amount of voltage like the battery to turn it off per say. I do know that test point has 7.5volts there.
Last edited by timmy; 10-24-2022 at 07:29 PM.
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