Been asked to troubleshoot a clock, 6 tubes, multiplexed 2 x 3, that is 3 anode drivers for 6 tubes.Two of the tubes that share an anode driver are not lighting.
Seems pretty straightforward, repair the suspect anode driver. Standard high side NPN/PNP pair. But when I put a scope on it, I do see the +170 seemingly switching. The waveform does look subtly different on the bad driver. I'm scratching my head a little as to why I see switching HV at all on the bad tube anodes. Can anyone shove me off the plate and towards first base -- explain what I'm seeing? I feel a little stupid -- been troubleshooting over 30 years.... Terry -- 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/44a4a8b2-054b-478a-81d4-2026d38f9beb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
