[time-nuts] Dead 5061B

[paul swed]

Hello to the group.
A few years back Skip took apart a 5061 CS tube. Took the best pictures
with detail that has ever been posted. I really learned about the internal
details from his effort.
Tom kindly found the links re-posted here.

http://lists.febo.com/pipermail/time-nuts_lists.febo.com/2016-October/083806.html

The entire thread is interesting:

http://lists.febo.com/pipermail/time-nuts_lists.febo.com/2016-October/date.html#end

In a off thread email we discussed the possibility of reattaching the
ionizer. Please look at the ionizer picture and you will see why that will
not work. Unlike a classic light bulb with tight coils of filament and
droop for expansion and contraction the ionizer is a straight tight ribbon.
When it pops material gets vaporized or simply falls away. There is no
material to by chance reattach.

Granted there is nothing to lose by tinkering around its dead and in
reality thats what a Time-nut does.

The very best of luck to you Jim and though your CS may be dead its been
great to read others help and guidance.

Regards

Paul

WB8TSL





On Mon, Nov 4, 2019 at 9:51 PM AC0XU (Jim) <James.Schatzman at ac0xu.com>
wrote:

> Time Nuts-
>
> Thanks to John, Corby, Skip and anyone else I missed who offered help.
>
> John got it in one. The hot wire ionizer is open, as measured at the D
> connector coming out of the tube. I understand that this is a terminal
> condition. Too bad for me.
>
> BTW, I found this note on antiqueradios.com:
>
> ================
> There is a procedure for broken filaments also. The success rate of
> welding a filament is very low in my experience but has extended the life
> of a few expensive tubes for me. You apply high voltage to the filament
> pins and tap the tube to try to make the broken ends touch. If all works
> well, the filament fuses on contact and continuity is restored. I use a
> charged capacitor as the voltage source since it will discharge immediately
> so it will not burn the filament out again.
> It's pretty much the same procedure I use to restore open audio
> transformers for my 20's battery sets. I have over a 50% success rate with
> my audio transformers so far.
> ================
>
> Has this ever been tried on a cesium tube?
>
> Jim
>
>
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