Quote:
Originally Posted by Jeffhs
The lines on your CRT may be test signals or closed-captioning, Macrovision, etc. If you are seeing them (you shouldn't), your set might be underscanning somewhat.
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Reread - the OP said vertical lines. Test signals, closed captions, etc. produce a few bright horizontal lines at the very top of the picture. This is something else.
Are these vertical lines faint? Do they change with image content or are they stationary?
If stationary, they are most likely the box.Different converter boxes used different techniques for converting the HD broadcasts down to SD for the analog output, and this brand may have less accuracy than some others.
If they move with changing content, it could be the box or conceivably the station's MPEG encoder. Is it the same on all stations?