I just hooked up my new DST-3000 today to my Tosh 40X81 HDTV, and can confirm that this STB will not output both S-video and composite video at the same time. I'm also finding some unexpected results with the picture geometry between the S- and composite video outs. With 480i via S-video, I can use the TV controls to change between Standard, Theaterwide, and Full geometries. However, with the Standard (4:3 image with gray sidebars), the image looks "skinny", with figures vertically elongated. With 480i via component (which the STB upconverts to 1080i), I can't change geometry with the TV controls, and the image apparently locks in the "Full" mode with considerable overscan, but the vertical elongation isn't there. Is what I'm describing normal for this STB-TV combo or do I have something connected wrong?
I'd love to see how native 1080i looks with this setup, but I have no signal source yet. I plan to get HD OTA, and the first of my local network affiliates won't go online with HD for three more weeks.
Any help appreciated.