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Old 20th May 2011, 03:00 PM   #1
nickds1 is offline nickds1  England
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Default Repairing broken pins on valuable tube...

Hi, I have a valuable & rare tube with a broken pin - its sheared at the glass interface, but is still gas-tight. Before you ask, it came this way

Can this be repaired by a glass/neon shop, i.e. have a new bit fixed to the end of the old? Ideas?

Thanks
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Old 20th May 2011, 04:33 PM   #2
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Hmm....

I wouldnt have thought so....

I used a pin (sewing type) a small spring and a connecting lead, modded up a socket so the pin protruded against the 'stump' of the broken tube-pin on a CRT many years ago.

It was a G1 pin so no current--it worked fine....

All according what pin/current the tube draws through the broken pin will govern success of this method--but at least you stand a chance without possible further breakage of the valve itself....
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Old 20th May 2011, 05:03 PM   #3
poynton is offline poynton  United Kingdom
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Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
Sell it on Ebay !!

If it is really valuable, some idiot will pay for it even broken.

Put it on at an absurdly high Buy-it-Now price with offers.



Andy


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Old 20th May 2011, 05:27 PM   #4
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Out of curiosity, What valve is it...?
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Old 25th May 2011, 07:45 PM   #5
nickds1 is offline nickds1  England
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Quote:
Originally Posted by Alastair E View Post
Out of curiosity, What valve is it...?
CSF F9020AA - a display rather than audio tube, extraordinarily rare, typical cost (if you ever find one) somewhere north of USD 350 (and have gone for over USD 500).

Anyway, there's enough usable pin stub for get a sprung pin onto, so made a holder from acrylic and its now fine (pin current is only 5mA).

Cheers
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Last edited by nickds1; 25th May 2011 at 08:01 PM.
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