Convergence ?

[Electronic M]

Originally Posted by Alex KL-1

Great, thanks! So there is some hope.

Too bad, the service for this model have the complete setup only for the in-line CRT (at least indicates the preferred sequence for the convergence board adjustments), so I need to apply/use the "generic" delta gun alignment then... What is the most preferred documentation for learning that (if extra degaussing not solve the problem)?

About EDIT: inspired by the simple "Convergence?" thread title, I ended posting about it just here... ;-) but if moderators prefer to change this postings to a independent thread, I'm also happy :-)

If you mean purity process that's fairly simple. Degauss first. Turn down all screens except red (I sometimes cheat and use a pure red video field if I don't want to do grayscale), loosen the deflection yoke and slide back until it touches the convergence yoke...The picture should now look tie-dye with a red spot near center, adjust the neck purity rings until the red dot is centered then slide the deflection yoke forward until both full screen and best Purity is obtained (there's usually 1/2"-1" of wiggle room in the full screen range to allow adjustment for best edge purity) and lock it down there. Preform grayscale and check static convergence (the 2 can interact.... badly enough that if you swap CRTs you may have to do 2-3 consecutive Purity and static convergence adjustments before both are right)... Sometimes I've had to cheat purity by adjusting rings a bit with the yoke forward because the above by the book process didn't work as good as desired after a couple of tries.