Hi Mark,
... for sure I was tired last night, but hey!
If you have a 466 handy then that could well be a game-changer.
Thanks for your supportive words.
There has been some excellent advice throughout this thread, which has transformed my understanding of general fault-finding as well as certain things that I had read about but never really worked on in practice, such as op-amp feedback circuitry.
If I'm honest, there were times when I thought of giving up on this scope, however finding the crossed transformer wires was the missing part of the picture, and now I can see no real reason why this can't be repaired.
I'm very comfortable with electricity and electrical properties even if I don't yet have the necessary understanding of how certain components interact when placed in placed within particular circuitry. But that is coming.
I'm not looking to be a design engineer, however the experience and capability to recognise circuit weak-points is where I would like to get to, so projects such as this scope are actually a Godsend.
This scope will be repaired.
All the best.
James
James55