A few things just in case.
Sams wave forms show 2 complete lines or frames.
The little isolation PS runs off the FBT. Check its filter cap.
Watch the lead dress, if to close to FBT it can cause this.
Remember cathodes high = dark pix, low =bright pix.
Scope should show a damped ring , refreshed (ping) at start of every hoz line.
That should show up on scope. Like I said it almost has to be there !
Also remember there are 2 or 3 grounds in this set.
AND since you re-capped check the polarity & value of every cap ! This is why
in most cases repair first then change a few caps & retest & so on.....
Zeno
