[thinktreasure]

steve why don`t you change caps first then try
sam

I know that it is the conventional method. I may just do it, actually correction, I will do that eventually. Old habits die hard. I was a Tech in a repair shop for a lot of years and we never would consider such an idea. We fixed what was wrong.
I guess it's mostly the challenge, also the chance that before knowing the condition where your starting from, you don't know if you injected issues or they were there to start.

However, I'm a bit rusty on my tube theory, which was long ago replaced by solid state & microprocessors circuits.

Steve