Since I always end up here when looking for help on this type of issue, I figured it was time to join.
Beyond that, I have what could be considered an ancient HD set. It's a Samsung tube, 4:3, and does 480p and 1080i, model # TXM3296/7HF. Up until I had my 360, I never used anything other than 480p. Nothing I had supported it. I bought in 2003, so I'm well out of warranty.
Well, when I picked up the 360 and started playing in 1080i, I noticed faded lines running down the left side of the screen. These only show up when in 1080i, as did some rather nasty geometry issues. I shrugged the lines off as it wasn't terrible, just a small annoyance. The geometry issues I kinda/sorta fixed myself through the service menu. Note the lines were there long before I started playng with buttons.
Now I have the HD-DVD player, and I can't ignore it anymore. They're far more noticeable when there's a brighter image. In fact, when it's dark, they're not visible at all. I'm sure they're still there, but can't be seen. I don't know if the lines are getting worse or I'm getting more annoyed by the day.
I've dabbled in the main menu with no options, and then learned of the service menu. Having no clue what 80% of that stuff meant, I didn't do much other than fix those geometry issues.
So, anyone know what the cause could be? Better yet, know what a fix could be?
Thanks for your reply in advance. You've already helped me a ton before I ever made a post.