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#1
08-13-2023, 04:10 PM
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B&W CRT Question
Hi all. I have a 10BP4 with strong emissions down to 4 volts, no shorts but the cutoff is poor. How does a tube get this way, what is going on inside the tube that might create this condition, what kind of picture quality can I expect and is there anything that can be done to remedy it?
Thanks VKers! 
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#2
08-13-2023, 06:48 PM
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The cutoff test measures the effect of the control grid. If you have poor cutoff, the contrast may be poor. I would just try the CRT in the set and see how it performs. The tester may be lying.
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#3
08-13-2023, 07:49 PM
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I had a tube with absolutely no cutoff in a RCA set and it actually worked ok and looked fine.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
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