twiddler69

I'll take a closer look at the sockets. I'll also check continuity on the ribbon cable. Thanks

It happens with any cartridge I try, I also did swap the RIOT chip with my Atari 2800 (Video Arcade II) and I get the same results, and the old RIOT chip worked fine on the 2800, so I don't think its a bad chip. I did this with all the socket chips with the same results. Perhaps its a bad ceramic disc capacitor? Everything visually looks fine.

I picked up an Atari 2600 Six switch (heavy model) on Ebay cheap. Everything works except the game select is stuck in the cycle mode. I tried removing the switch but it's still stuck in game select. I tested the switch with a multimeter and it works fine. I tried removing all the chips and swapping them with another model but it still keeps cycling through the game modes. Any idea what might be causing this? I couldn't find any bad traces on the board or anything shorted. All the components look good and clean.