[vcf-midatlantic] VT320 CRT replacement?

Ian Primus ian.primus.ccmp at gmail.com
Mon May 2 16:55:05 EDT 2016

On Mon, May 2, 2016 at 4:47 PM, David Riley via vcf-midatlantic
<vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
> Yes, all I meant to say is that to my understanding, it's similarly temporary, > and the effect of a rejuvenator on a CRT tends to revert similarly quickly.

It can be, but, what it's really doing is burning off the outer
coating of the cathode, and exposing more emissible material. This can
be temporary, depending on tube construction, but it's been my
experience that most mono tubes take to it very well and hold up
nicely. Some tubes, notably Sony color tubes... don't rejuvinate. Not
at all. And some, like 90's era Zenith tubes as used in some arcade
monitors - will revert within a week of use. But I've got mono tubes
I've zapped that are still fine, years later.

Also, when the tube is that dim - you have nothing to lose. Doesn't
hurt to try to get a little more use out of it.


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