DaveWM
01-19-2015, 10:34 PM
After a rather long and arduous thread on a set owned by a fellow VK member, I came across an issue that can effect all of us and I think warrants some checking.
The issue presented as a rapid failure of a shunt tube that was traced down to an incorrect DC potential on the heater of that tube. After thinking about it and noting that the CRT used the same heater source I surmised it would be a good thing to check to avoid excessive stress on our hard to get CRT's.
anyway I have a very short video on checking the shunt, I could have done the same with a CRT test socket and will do so in the future.
https://www.youtube.com/watch?v=ALleVRf3gBE
I don't recall seeing this covered here on VK maybe it has I just missed it or maybe I am all wrong about the issue (if I am feel free to correct me).
The issue presented as a rapid failure of a shunt tube that was traced down to an incorrect DC potential on the heater of that tube. After thinking about it and noting that the CRT used the same heater source I surmised it would be a good thing to check to avoid excessive stress on our hard to get CRT's.
anyway I have a very short video on checking the shunt, I could have done the same with a CRT test socket and will do so in the future.
https://www.youtube.com/watch?v=ALleVRf3gBE
I don't recall seeing this covered here on VK maybe it has I just missed it or maybe I am all wrong about the issue (if I am feel free to correct me).