I switched to a different power supply and it's been running fine so far. If it happens again I'll try the cap.
Thanks, David On Sunday, June 2, 2019 at 6:09:23 PM UTC-4, Terry Kennedy wrote: > > On Sunday, June 2, 2019 at 4:44:05 PM UTC-4, David Fleig wrote: >> >> I've got a Nixichron purchased from Jeff Thomas years ago that's not >> behaving. It starts up and runs fine for several hours or even a few days >> then starts emitting a continuous beep and the display goes blank. >> Unfortunately, it's random enough that no ones seen it actually happen, we >> just hear it. Unplugging it and plugging it back in fixes the problem >> until it happens again. Jeff had fixed this issue a couple times for me >> but I never got the details on what he did. I've looked over the board and >> don't see anything obviously wrong. I've also pulled the processor and >> level-shifters out, cleaned the terminals and replaced them but it hasn't >> helped. >> > > I have one that used to do that a lot. Updating to the latest firmware > (from MichaelB) helped somewhat, but putting it on a UPS seems to have > solved the issue. Based on that, I suspect that some power glitches are > latching up the power-on reset logic in the clock. Fitting a large-value > capacitor across the power input may help (you can test this on a > disposable power adapter, rather than opening the clock up again). > -- 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/0ca1c83d-9b79-4c9d-9ff9-99b6a1dab111%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
