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Joined: Sat, Apr 4th 1998, 00:00 Roles: N/A Moderates: N/A

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Old O scope VuData 2521 Dec 7th 2020, 11:08 1 1,325 on 7/12/20

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Old O scope VuData 2521 KX4SN on 7/12/20
My trusty mini scope has issue with intensity, I know that it has to do with cathode to grid bias. But I cannot find service manual or schematic anywhere. I hesitate to start trying to measure as some (many) scopes have several KV on cathode. Any ideas?

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