[neonixie-l] Re: Half-digit neon bulb 25/15 mm long
If I had to guess, one or more electrolytic caps has probably dried-up and is no longer working as a capacitor. Probably a good idea to replace all of them with fresh ones. Keep an eye out for corrosion on the PCB from leaky electrolytics, and be aware that some probably contain PCBs (not printed circuit boards, but highly toxic *P*oly-*C*hlorinated *B*i-phenyls). I always got a laugh about cost-cutting by using a neon bulb instead of a nixie tube for the leading '1' digit. I bought 2 Fluke 8000 DMMs several years ago (they are LED, not nixie) because they were very reliable when I was a technician. But they have accuracy issues, and some of the pushbuttons dont work very well. I'll probably give them away as-is to anyone willing to pay shipping costs. Some things dont improve with age -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6ec70545-bcc4-479a-8061-16b9870932e2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Half-digit neon bulb 25/15 mm long
Fellow neonixier's, I have acquired a (Weston) Schlumberger 1240 3-1/2 digit multimeter made roughly in 1970/1971 mainly because of its compact design, suitable for a desktop numeric indicator (clock, thermometer). I had the feeling the half-digit was broken, and I was correct. I initially suspected the 2N5179 NPN driver because other lamps are faint as well, but after removing the neon bulb I could confirm it was bad (even if it still contains gas). The result of removing the board from the case caused a damage in a way that the multimeter is not reading the input but rather displaying the voltage across a slowly (dis)charging capacitor. If this fault sounds familiar, please provide some troubleshooting directions. BTW, I have no diagram: the closest I could get is the 1242 model that is slightly newer and has better precision. And Nixie drivers are the hardly-documented CuL9960 (and CuL9959 and CuL9958), but I can live with them. Unless I can trace the fault, the clock will require direct interfacing with the unknown logic. Anyway, back to the neon bulb. It is 25 mm long, the "1" digit is 13-15 mm long (compatible with 5855 Nixie symbol height). Picture attached. Would someone suggest if this model is still around and its name? Paolo -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CABj2Vaav2EjeKyxtCVtsyeF24%2BTP%3DYB8ut75BKZf-vF6tZoPXg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Weird display (possibly OT)
I found a smiliar item with a picture of a working display https://ebay.com/itm/192347181715 -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8bca5ecf-e0b1-46c3-a41a-5bd200ddc729%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: XN-12s on Ebay
Hi David, Yes i would be very interested in the XN-13! What would be the price/ what would you trade for if you trade. Regards Jonathan -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/cdea1de6-c006-4667-8309-c6a7c10ca4d4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
