[Heathkit] SB-630 Neon Lamp update - it's fixed!

Mike McCarty Mike.McCarty at sbcglobal.net
Thu Dec 9 21:53:50 EST 2010


jack m wrote:

Outstanding work!

[...]

> Someone actually suggested that I try to file the glass to expose the
> leads for micro surgery.

I've had success doing that before...

> Well, I did just that and the result was a success which I'd like to
> describe to those interested.  Assuming that I would break the bulb,
> I took a sharp, fine file and cut a shallow transverse notch across
> each side of the base with about 5 passes each side.  During the
> process, the second lead broke off.  Not having anything to lose, I
> placed a nipper pliers on the cuts with light-medium pressure,
> squeezed and prayed - the glass shattered right below the cuts,
> instantaneously exposing 1/4 inch of each lead!  The bulb vacuum was
> still intact!  A sacrificial resistor was canibalized for it's leads,

... though not using that technique. I've just gradually filed down
the side until exposing some lead, and then tack solder. Nice job!

[...]

Mike
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