White line on letterbox bottom - 1.1 18.2

[mrmike]

For various reasons I'm currently viewing my STB downconverted to 480i and letterboxed on my old RPTV.  I'm seeing a white line, about 4 or 5 pixels wide on the bottom of the 1080i letterbox when viewing CBS and now when viewing the 1080i test signals on 18.2 as well (Didn't have it before when 18 was on the air).   It doesn't happen on 10.1 when it's at 1080i.  The STB is an MIT-MDR200.  Anyone else seen an issue like this?

-MM

[picopir8]

What are you using for a TV/monitor?  I personally, do see a similar effect on some SD broadcasts where I get a green bar on the right hand side of the picture.  Im using a projector so I figured that Im seeing something that most people dont see because normal TV sets would likely have those pixels covered by the plastic housing.  I "fixed" my problem by increasing the image size slightly so the green bar is on the black masking strip of my screen.  In both of our cases it seems to be an artifact from converting a signal to a different resolution.  Im not sure how to impose a true fix, however.

[StarvingForHDTV]

Maybe not enough overscan?  It might be worth checking.

Starving

[mrmike]

Yeah, it's a letterbox on a 4:3 screen that doesn't do anamorphic squeeze, so I don't think it's an overscan issue.