After leaving the clock turned off for a period of time and then restarting, the x10 section tube restarts and will run for about 5 minutes before no longer operating?
The x1 hours and x1 secs tubes are also sometimes only partially displaying the number.
Could this be connection issues between the two boards or power supply issues? Current power pack is 9v dc 1.66amp.
Did you check the 170V tube power? The partial lighting normally is caused by either cathode poisening (which is a long-term process) or too low voltage/current. As tubes always differ in their parameters there will be some tube that fails first. But as all tubes are unevenly lighted right from the beginning my guess is that the 170V power fails...
Yes the mosfet does start to get hotter once the tube drops out
At the 170v test point, the voltage is showing as
148v with a 9v dc 1.66a supply
When I try a12v supply it puts out 148.4v at the test pt and the mosfet still gets hot - probably after 2-3 mins and this is when the tube also drops out.
What’s the password to access wifi connection once an IP address is established?
Hope this will be a simple fix.