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  #46  
Old 09-26-2018, 08:53 PM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by Kevin Kuehn View Post
Actually there's quite a few with a single magnet on the side that have two sets of bars extending to clamp around the neck. If I'm not mistaken those would qualify as a double field. I'll see if I can find textbook examples of the two types. Can you see the type number on the neck of the CRT in your TV?
Looking through the pictures, it looks like a 12UP4 metal cone CRT.
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  #47  
Old 09-27-2018, 01:47 AM
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Kevin Kuehn Kevin Kuehn is offline
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Originally Posted by dieseljeep View Post
Looking through the pictures, it looks like a 12UP4 metal cone CRT.
I can't tell. All the pictures seem to be from the front and the green Zenith mask is covering the edges of the CRT.
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  #48  
Old 09-27-2018, 11:02 AM
dieseljeep dieseljeep is offline
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Originally Posted by Kevin Kuehn View Post
I can't tell. All the pictures seem to be from the front and the green Zenith mask is covering the edges of the CRT.
Every 12" Zenith I've seen used a metal cone CRT! The 10" model used a 10BP4 glass tube.
It's been probably 50 years since I worked on one of those.
The Sams would probably show the top view of the chassis and the CRT.
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  #49  
Old 09-27-2018, 01:06 PM
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Kevin Kuehn Kevin Kuehn is offline
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Quote:
Originally Posted by dieseljeep View Post
Every 12" Zenith I've seen used a metal cone CRT! The 10" model used a 10BP4 glass tube.
It's been probably 50 years since I worked on one of those.
The Sams would probably show the top view of the chassis and the CRT.
My model 2350RZ1 tube chart lists both 12UP4 and 12LP4. As found with an RCA 12LP4A. I'd expect many 12UP4 were converted to all glass at a later time.

https://c2.staticflickr.com/2/1925/3...78f638c1_b.jpg
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  #50  
Old 09-27-2018, 05:40 PM
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Zsuttle Zsuttle is offline
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Yeah, this model has the 12UP4, though there's no number on the original ion trap. Though I know it wasn't the original to the set because it didn't match the pictures from the service manual
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