Greetings to the List: Can anyone point me to a source of service literature (schematic, specs) 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

Try Dave at ArtekMedia.com. He has a huge inventory of scanned HP and Tek manuals. Best, -John ================= > Greetings to the List: > > Can anyone point me to a source of service literature (schematic, specs) > 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 > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

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 made 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 Paul On Sun, Oct 31, 2010 at 10:17 PM, J. Forster <jfor@quik.com> wrote: > Try Dave at ArtekMedia.com. He has a huge inventory of scanned HP and Tek > manuals. > > Best, > > -John > > ================= > > > > Greetings to the List: > > > > Can anyone point me to a source of service literature (schematic, specs) > > 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 > > > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

There are a number of small neons available pretty cheap: http://www.bulbtown.com/Neon_Glow_Bulbs_s/909.htm -John =============== > 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 > made > 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 > Paul > > On Sun, Oct 31, 2010 at 10:17 PM, J. Forster <jfor@quik.com> wrote: > >> Try Dave at ArtekMedia.com. He has a huge inventory of scanned HP and >> Tek >> manuals. >> >> Best, >> >> -John >> >> ================= >> >> >> > Greetings to the List: >> > >> > Can anyone point me to a source of service literature (schematic, >> specs) >> > 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 >> > >> > >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> > >> > >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >