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  #16  
Old 12-03-2022, 12:10 AM
old_coot88 old_coot88 is offline
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Originally Posted by Yamamaya42 View Post
Most here can agree that shango is a bit... Odd
How so? In his political commentaries, or his fluency in spontaneous glossalalia?
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  #17  
Old 12-03-2022, 08:59 AM
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Notimetolooz Notimetolooz is offline
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Originally Posted by Chris K View Post
Yes I remember seeing someone do the re-soldering of the leads after he extended them with copper wire strands pulled from a lamp cord. Long leads will certainly make threading them through the pins all at once much easier. I saw shango replace the pin cap on a CRT with about a dozen leads in play but he didn't extend them and it was an all through or nothing task. He, of course, did it though!
That may have been Phil Nelson of Phil's Old Radios in one of his TV restorations. I seem to remember reading about a base that had come off and one of the leads breaking right at the glass. It was not a filament line and so by carefully chipping a tiny amount of glass out around the wire and using conductive epoxy he was able to get the tube working again. The heater wires handle too much current for this to work.
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  #18  
Old 12-03-2022, 11:47 AM
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bandersen bandersen is offline
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Originally Posted by Chris K View Post
... Are these tubes as rare as folks are saying? Am I probably going to need to buy a donor set in the end Bob?
Yes, I guess you missed my earlier post? Admiral may have been the only maker to use this CRT. Likely few folks would have dropped the cash to replace the picture tube in these little portables so not many were made.

On the plus side these are relatively common and small enough shipping is feasible.

It's not that hard to line up and slide on a base with only 5 or 6 pins. I've done it a few times. I've only needed extension wires for 14 pin 7JP4s.
I've also files away glass to repair a broken off lead. Nerve wracking but not impossible
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  #19  
Old 12-03-2022, 01:07 PM
Chris K Chris K is offline
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Originally Posted by bandersen View Post
Yes, I guess you missed my earlier post? Admiral may have been the only maker to use this CRT. Likely few folks would have dropped the cash to replace the picture tube in these little portables so not many were made.

On the plus side these are relatively common and small enough shipping is feasible.

It's not that hard to line up and slide on a base with only 5 or 6 pins. I've done it a few times. I've only needed extension wires for 14 pin 7JP4s.
I've also files away glass to repair a broken off lead. Nerve wracking but not impossible
OK Bob I appreciate the input very much. When I start the next project, the VT71, your input will be essential!! I've watched your restoration series on it several times and it's very impressive and absorbing. All the best!
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  #20  
Old 12-03-2022, 02:33 PM
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bandersen bandersen is offline
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Thanks. I've done about a dozen of them. Which series are you referring too?
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  #21  
Old 12-03-2022, 02:54 PM
Chris K Chris K is offline
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Originally Posted by bandersen View Post
Thanks. I've done about a dozen of them. Which series are you referring too?
The 8 part series you did about 4 years ago.

https://www.youtube.com/watch?v=ME-w0KFQ-Io&t=144s
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  #22  
Old 12-03-2022, 10:05 PM
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Phil Nelson Phil Nelson is offline
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Quote:
Originally Posted by Notimetolooz View Post
That may have been Phil Nelson of Phil's Old Radios in one of his TV restorations. I seem to remember reading about a base that had come off and one of the leads breaking right at the glass. It was not a filament line and so by carefully chipping a tiny amount of glass out around the wire and using conductive epoxy he was able to get the tube working again. The heater wires handle too much current for this to work.
Yes, the conductive epoxy repair is still holding up in my Capehart-Farnsworth 661-P. You can read about it here (scroll down to "Repairing the Picture Tube Base"):

https://antiqueradio.org/CapehartFar...Television.htm

Not suitable for every case, and silver-filled epoxy isn't cheap, but it worked here.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

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