Are these things I should consider bad

[DaveWM]

Perhaps this has been asked and answered but will bring it up.

I presume the jail bars are caused by either of the below:

video info (lack of blanking during retrace)

video info (ringing happening during trace)

non linear sweep during trace (not likely) if this was the case I would think holding the scope prob near the horz leads of the yoke should give a wave pattern that would have the ringing during the rise time, but that is just a guess.

Did you ever try putting on a blanked out screen and scoping the G1's (and may was well look at the cathodes and G2 for that matter, even though they should not have video info).

with an blanked out screen you should have no AC signal at the G1 (or cathodes and G2 for that matter).

You should adjust the brightness and contrast on the blank screen to make the jail bars as bad as possible.


This should be done with a blank screen image being fed to the tuner so you can see the horz sync pulse (the blanking period) followed by a burst pulse.

If there in no AC signal between H sync pulses, then is seems it would HAVE to be insufficent blanking during retrace.

If that's the case I would still be hung up on how you have the brightness/contrast/screen drives setup. I think this is the same set that you said you could not get the CRT setup done when using the described SAMs method using the setup switch and G2 adjustments.