Do you have a scope? Is the output of the 7805 still a clean 5V? How about the output of the HV regulator? Can you measure the current going into the clock? (with your multimeter)
I'd be a bit suprised if the cause is the driver chips, because after replacing them it didn't seem to improve a lot (if any) apparently. I wouldn't be too worried about 140F for the 7805 btw, it should be able to go up quite a bit higher than that, though with the big heatsink, if attached well, it's a bit surprising. You can try lowering the input voltage to 9V, and see if this helps. Keep an eye on M1 in this case, as it will probably have to work a bit harder to pump up the HV. On Saturday, March 28, 2015 at 6:57:28 PM UTC+1, blkadder wrote: > > I have been using the kits from PV Electronics (www.pvelectronics.co.uk). > He has kits that will use pretty much every tube manufactured. He does > have a few that use the big Nixies like you have. All the kits I have used > are his QTC line, and they seem to have all the features that your current > clock has. If you see his online chat button active, he actually answers > things right away. Hope this helps. > > Ron > > On Saturday, March 28, 2015 at 1:51:10 PM UTC-4, Kiran Otter wrote: >> >> By the way, I'm open to recommendations on a different clock kit that >> will use my IN-18s. I haven't had much luck finding another make. >> >> Kiran >> > -- 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/c62c7c5e-46a7-4c94-8e8d-2f0fad8a4209%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
