[Harlan]

Thanks Ron,

First ... sorry I had a brain freeze on the model number. You obviously knew I meant a 41-608 rather than 680.

Your information makes good sense. I will do a check on that mica and rule out the tube by just unplugging it and see if the voltage pops up to supply level. Then we can see which is the culprit. Guess I just could have done a little more logical checking but was getting kinda tired of the task for a while.

Will try to reply with the results next chance I get to follow up on the project.

Thanks again and best regards,
Harlan