Sylvia Else wrote:
and now it's good as new.

I may have spoken too soon. Certainly the arcing issue is resolved.

But now the picture colours make it looks as if the tube is in need of a
serious degaussing. Even the television's own set up captions vary in
colour across the screen.

If I understand things correctly, this cannot be a consequence of my
soldering technique, but has to be the result of something moving when I
tilted the TV over to get access to the circuit board.

Either that, or there is previously unnoticed mucking great magnet
underneath my floor boards.

Any thoughts?

Sylvia.