Quote:
Originally Posted by miniman82
Since it's not a vertical blanking issue, how exactly does this chassis blank horizontally? I don't see a blanking tube.
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There is not blanking circuit as such. Blanking is done by the video waveform. Hence if the if there is a bad VIF response or misadjusted fine tuning, high video frequencies will overshoot producing a white line.
Try adjusting the fine tuning and reduce the RGB CRT screen adjustments.