Help me understand the 630 horizontal circuit

[init4fun]

Originally Posted by miniman82

That was the first thing I tried, I'm telling you that tube is so close to the flyback that the only solution is to move it out of the cage. The terminal directly above it carries a 3kv horizontal pulse, so that's probably the one cause the trouble.

I wonder if this is the reason some sets had a 6AL5 mounted under the chassis on it's own little metal bracket , it was picking up some unwanted signal or other ...