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Old 04-17-2017, 11:28 PM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
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Parting out an Arvin 4080-T

Complete chassis and the outer shaft knobs, also the front outer case and CRT mounting hardware. Please send me a PM if you need any of it.








Last edited by Kevin Kuehn; 04-17-2017 at 11:34 PM.
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Old 04-18-2017, 01:51 AM
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Kevin Kuehn Kevin Kuehn is offline
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Well I just finally figured out that the 8AP4A is good, although it has a fairly good sized ion burn in the middle. Otherwise it's currently making a nice bright picture in my Admiral 20Z1 chassis with the brightness control only about 2/3 of the way up(8.5kv on the anode). Apparently most CRT testers won't test one of these triode tubes for emission even though the type number is listed in setup book.

Anyhow I may have to rethink parting out this chassis now, unless someone wants to make me a reasonable offer on the CRT. I'm not sure what a fair price would be given it's condition, but it's certainly very watchable.









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Old 04-18-2017, 11:00 AM
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miniman82 miniman82 is offline
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I been looking for one of those metal 8"ers, can you bring it to the convention?
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Old 04-18-2017, 11:31 AM
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Kevin Kuehn Kevin Kuehn is offline
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Can't make convention but it's a light enough tube that it wouldn't be that bad to ship. Maybe you can re-phosphor the face?
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Old 04-20-2017, 03:53 PM
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miniman82 miniman82 is offline
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I know people from Milwaukee heading there, are you anywhere near that?
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Old 04-20-2017, 04:17 PM
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Kevin Kuehn Kevin Kuehn is offline
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Unfortunately I'm closer to Minneapolis and Saint Paul Mn, northeast about 100 miles. Otherwise known as the sticks.
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Old 04-20-2017, 04:31 PM
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Kevin Kuehn Kevin Kuehn is offline
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By the way there's new supporting evidence that these largish dark shadows on the CRT face are not ion burns. http://antiqueradios.com/forums/view...16871&start=40
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Old 04-20-2017, 05:54 PM
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benman94 benman94 is offline
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Quote:
Originally Posted by Kevin Kuehn View Post
By the way there's new supporting evidence that these largish dark shadows on the CRT face are not ion burns. http://antiqueradios.com/forums/view...16871&start=40
You should post a link to this ARF thread in the thread about the ion burned 12JP4. To summarize, and for the hearing impaired, IONS ARE NOT DEFLECTED BY TO A MEANINGFUL DEGREE IN A MAGNETIC DEFLECTION TUBE. The only three places the electron beam may travel in a design that uses a trap are:

a) the screen

b) the neck glass

or c) some other element of the gun, burning a massive hole in it.
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