Paul if you see a visual sag on any part of the grid you might try laying
the tube on a towel on a table and giving it some good wacks will a rubber
mallet. Or as an alternative, I fixed one a few years back with a car
battery and a jumper cable by giving the cathode to grid tube pins a few
jolts. This may work or it may weld the two together. This may be also
worth a try.
Herb, KV4FZ
On Sat, Oct 12, 2019 at 1:23 PM Paul Kraemer <elespe@lisco.com> wrote:
> Does anyone have a restoration technique to remove a grid cathode short
> on a 3-500Z?
>
> I have on just laying here---don't know why I keep it. Filament still
> lights. No plate to anything short. Free for postage from 52556
>
> Paul K0UYA
>
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