homestar92 Posted March 25, 2022 Share Posted March 25, 2022 I bought a 7800 yesterday and it's only partially working. It works great for 7800 games, but I get no signs of life at all aside from a black screen when I fire up a 2600 cartridge. I tested every cart in my collection (including my harmony cartridge) and only a single one of my 2600 carts shows even a slight sign of activity, which is Moon Patrol. It shows a bunch of garbage on the screen (picture attached). Are there any components on the board used exclusively in 2600 mode where I could start my diagnosis? Quote Link to comment Share on other sites More sharing options...
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