No Horiz Oscillator on Zenith Porthole- Solved!

[kramden66]

to verify i turned on a set that has a weak crt , it plays ok but if you turn the brightness high enough i get those same retrace lines like in your pictures , they are spaced far apart , thin just like you show , these aren't the kind you get from broadcasts or copyguard , so if you can turn the brightness down to where they go away and the image is still bright or bright enough it should be ok , if not try a brightener and see if you an get enough brightness without the lines appearing , it is unfortunate that these things happen , no idea if adding a retrace circuit to the set will get rid of it since these aren't the broadcast retrace lines , broadcast / copy guard retrace lines they are brighter , closer together toward the top of the screen and pretty sure they are thicker lines and there are more lines then what is showing in your pictures.
mike

[Eric H]

I tried a different CRT but it still had lines. I still need to replace the electrolytics in this set so I won't get too worried about it just yet.

I think it might have something to do with the vertical being a bit messed up, the blanking comes from the vertical circuit doesn't it? So if it's not right...