Phil -
Thanks for your quick and informative answer. I have version 3 of the Epiphone valve Junior which luckily has the DC heater circuit. Thanks for confirming that there's something strange with the schematic as you can see it's lifted from a venerable source but you never know right? I'll try to find a better schematic I'm almost certain there's one floating online for all different versions of the EVJ. I am at work now I will do the measurements you asked me when I get back home. Just to clarify you are asking me to do that with both tubes, not only the power tube that's giving me the problem. Also you want me to measure between 4 and ground and then 5 and ground or between 4 and 5 only? Finally I might be able to obtain an identical working amp from a friend-of-a-friend etc LOL which could be useful for comparison purposes. Much obliged for the help!
Thanks for your quick and informative answer. I have version 3 of the Epiphone valve Junior which luckily has the DC heater circuit. Thanks for confirming that there's something strange with the schematic as you can see it's lifted from a venerable source but you never know right? I'll try to find a better schematic I'm almost certain there's one floating online for all different versions of the EVJ. I am at work now I will do the measurements you asked me when I get back home. Just to clarify you are asking me to do that with both tubes, not only the power tube that's giving me the problem. Also you want me to measure between 4 and ground and then 5 and ground or between 4 and 5 only? Finally I might be able to obtain an identical working amp from a friend-of-a-friend etc LOL which could be useful for comparison purposes. Much obliged for the help!