Repairing broken pins on valuable tube...

[nickds1]

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

 

[Alastair E]

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....

 

[poynton]

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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[Alastair E]

Out of curiosity, What valve is it...?

 

[nickds1]

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