[rescue] Looking for an IPX OT: picture of a SLC 4/20 or ELC ?

Ron Wickersham rjw at alembic.com
Wed Dec 11 14:21:54 CST 2013

On Wed, 11 Dec 2013, Mouse wrote:

>>> I had a 1600x1200-capable black-&-white CRT [...] that I used as my
>>> main head until it dimmed into uselessness.
>> Is it the sort of dimming that might be undone by a CRT rejuvenator,
>> or has the phosphor just gone?
> I don't know - I don't know how to tell the difference, short of trying
> the rejuvenator treatment to see whether it works.

I don't think there is ever any dimming of the phosphor, the lower light
output is due to aging of the cathode and consequent loss of emission.

there is another effect from ions that poison an area of the phosphor and
cause lower output and a localized change of color but that only happened
rarely and where the vacuum was not sufficiently hard.

i too am a lover of precisiion monochrome CRT devices.


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