Yeah: because the lines are green, forget the G2 story ...:)

Instead of changing the transistors you could interchange them, i mean swap parts with the blue (or red) outputs so you can sse if the problem 'moves' (thus the lines change colour) and find the fautly part.

Another thing you can do (probably easier) is interchange cathode connections to the tube: connect blue (or red) output to the green cathode on the tube and VV.

If the lines are still green the tube is the problem, if the colour changes the electronics is the problem.

This is fairly easy to do by unsoldering one end of the resistors of the output stage connected to the tube and use 2 little wires....

ipaul>>

That sounds like a smart move, to interchange the output connections to the tube.

I just read your post a bit to late, because i already had done some soldering on the output board today. It actually showed several broken solderings at the big components. Big resistors and a capacitor. But not any related to the Green output. After resoldering. It turns out that the green lines are permanent shown on the screen now. So now it isnt a periodical defect anymore :)

It's fun, isn't ? ...fixing teles...more enjoyable than watching :)

If not a bit too much soldering somewhere maybe the 'tricky' part has died for good, which in a way makes it easier...

Probably a good time for the 'cathode swap'.