Have you checked D5 (the UF4004)? If the caps were replaced and HV+ and GND do not measure shorted (just probe across the test point and a suitable ground), might be a good time to borrow a scope to see if there's base drive to the FET.
On Saturday, 17 January 2015 13:00:36 UTC+8, barnbwt wrote: > > I'm gonna swing over the Shack tomorrow and cobble together some > equivalent capacitors to replace those in the HV circuit. There's a 220uF > 16V-rated cap, and a 1uF 250V-rated cap, both electrolytic. I suspect the > high voltage cap would have been the one most exposed to the overload from > the Nixie tube short. Capacitance adds in parallel, right? I should be > able to kludge together something with what they have in stock that'll be > good enough for another test, at least. If that doesn't work, I think the > next step is isolating the power supply circuits from the rest of the board > entirely, so I can rinse and repeat what I've tried so far... > > TCB > -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c9b6360b-ffac-43ed-afc8-df3feaf218c2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
