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Wells Gardner D9200 27" - 15khz Horizontal sync adjust issue

magicman

Student
Joined
Mar 12, 2025
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Coral Springs, FL
Hello, so as the title states, I have a 27" WG D9200 which works great in 31khz VGA mode, but when I switch it to CGA 15khz, the sides are way stretched out. I tried adjusting the H sync pot in the middle of the board but when it brings the picture in, the image then distorts the sides to squeeze it in. I'm trying to get it to work with light gun games, Area 51... some Sammy Trophy Hunting , Jurassic Park 3, Time Crisis 2... but the gun isn't recognized if I put them through the CGA to VGA converter so I have to connect them directly to the monitor. Anyone familiar with what pot I need to be adjusting to fix this? There is a separate H-V Sync pot but it's hot glued from the factory... don't know if I should bother with it.
 
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