I have a Nixisat with the large Z568M type tubes and have enjoyed it for many years. It stopped working recently, and after a couple of emails to Jeff Thomas went unanswered I recently learned via the net the sad news of his passing. I was very sorry to hear this. Jeff was always helpful when I needed it and the clock has given me great pleasure. I work at home, and it was always my buddy sitting there.
Now I'm wondering if anyone in the group can, or knows of anyone who can, repair this clock. There is a significant burn mark on the -- diode? -- next to the -- power transistor? -- on the circuit board, and the power supply itself is dead. I've ordered a new power supply but I'm not optimistic that the clock will still function with only that corrected. Any help appreciated. I am in the USA.