I'm wondering if I need to open it up and adjust the "Sync Polarity Jumper" and/or the "Video Clamping Jumper"... Does anyone know what either of these two jumpers do or if they'd likely fix my 480i issue?
Additionally, I can't seem to figure out how to even open up the 203. Could someone please explain how to do this?
This is how the manual says to open it but there are only two screws on each side (not three) and when I try to slide it back, nothing happens (it feels like all the connections on the rear are holding it in place):
Spoiler
P.S. I also have a few Extron RGB 192v boxes and they don't have this issue, but I specifically need to use the 203 in this case because I need the input/resolution memory for H-SHIFT adjustments. My OG Xbox needs the SERR correction when connected to my BVMs and it also shifts 480p and 720p horizontally different amounts. If I use the 192 then I can't shift the two resolutions independently. Additionally, the OG Xbox seems to shift 480p and 720p different amounts than all my other RGB sources that are connected to the same input on my BVM so I don't want to use the BVM's alignment controls and throw everything else off.