[time-nuts] hp 7563A Log Voltmeter Service Info Request
jfor at quik.com
Sun Oct 31 23:30:28 EDT 2010
There are a number of small neons available pretty cheap:
> I have had one and a fine case they can make.
> But the place to start looking is at a chopper that they use in it. Its
> of 2 neon bulbs and two photo cells. With age the neon bulbs die.
> What did on a voltmeter that suffered the same issue was use a modern
> chopping opamp.
> Yup to a bit of doing. Other crazy thought would be to hack into the unit
> and see if the bulbs might be replaced. Though hp used some smaller then
> normal ne2 neons.
> Just a thought
> On Sun, Oct 31, 2010 at 10:17 PM, J. Forster <jfor at quik.com> wrote:
>> Try Dave at ArtekMedia.com. He has a huge inventory of scanned HP and
>> > Greetings to the List:
>> > Can anyone point me to a source of service literature (schematic,
>> > for an hp 7563A logarithmic voltmeter?
>> > My recent purchase will become a cabinet for a different project if it
>> > can't be brought back to life.
>> > Thanks,
>> > Peter
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