> > Whilst I think that most now agree that the signals should have been > level-shifted, that does not explain how a clock that worked for ages > suddenly goes nuts... good point that actually - was it a sudden fault or > did it slowly get worse?
It was working perfectly right up until it wasn't. Nothing unusual preceded the failure, no power failures, lightning strikes, the device is on a UPS, no recent resets or anything. The current wall plug is not the original one, it was rated the same as the original one, and it's been the one it's used for 4-6 years. And again it's current failing state is a weird one. It is clearly still "trying" to work. It does a normal-ish start up beep sequence and digit check, but the digits are muddled, showing multiple digits, and the first two digits are most strongly showing "25" (which, being greater than 23, should never happen on this clock). And I think the second digit keep changing if the clock is left on, I think -- not sure about this, I didn't spend much time with it after John replaced the high voltage circuit since the old IC was actually smoking and we hoped initially that was the only problem. (And thanks to everyone for continuing to offer help. I truly appreciate it!) > -- 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/2047387a-786c-4da2-a705-ed213575777e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
