numitron clock

It has missed its NTP update and because the RTC has never been set it can't find anything useful to display.

Either you can go into the "Utilities" web page and tell it to do an update, or you can just leave it for a few hours and it will sync. If you force an jupdate, it should recover in a few seconds.

The NTP update frequency is 7261 seconds, so about two hours and a quarter.

Once the RTC has been updated, it should be OK even on later restarts. If it does not manage to get an NTP update right away, it will fall back to the RTC until the next update. Because the RTC has been given a reasonable time, you will not notice anything.

Make sense?

I soldered mine. There was no way I could keep all segments working without soldering.

Weird, the first batch of boards were a perfect fit, this batch seems a bit loose. In fact I still use the first board I made (with non-soldered tubes) as the test bed for each set of tubes I send out, and the holes are still a great fit.

I have a load a sockets, and the idea was to make a version with Noval sockets, but to be honest, these are even worse than the plain pins on the board: you have to push them in so hard I can't imagine that it is not damaging the tube.

I recommend to test as best you can by trying a push fit, and once you have everything tested out, solder them.