I have s-video mod and I get 9 vertical lines on the left side of screen, right side is ok. The vertical lines are equally spaced. System is Atari 5200 4-port with power mod. I should also note my 2-port Atari 5200 also has the same issue, they both have the same type of s-video board. Best way to see the vertical lines is with Moon Patrol all blue screen, or if you wait long enough it will show a red screen and its even easier to see there.
What I have tried so far to fix:
1-shielded video cable between mod board and connectors = no change
2-different s-video cables (3) = no change
3-Removed 2 inches of wire from mod board to video IC, i.e. mod board now sits directly on the video IC pins = no change
4-Used another 5200 power adapter = no change
5-HP bench power supply = no change
6-HP bench power off UPS = no change
7-Adjust R8 - you can make the 9 vertical lines appear less if you adjust, but they are still there, i.e. you might make them mostly disappear on blue screen, but they will show up on red screen
8-Lines are still present with composite cable
9-Removed RF module = no change
Any other ideas to try?
Edited by grips03, Sun Nov 3, 2013 10:20 AM.