Mellotron Posted June 14, 2014 Share Posted June 14, 2014 Hi! I have a Coleco Gemini that works great but neither of the controller ports works. What could be the problem? Here are some pictures.... http://www.hostingpics.net/viewer.php?id=377711DSC01916.jpg http://www.hostingpics.net/viewer.php?id=684215DSC01917.jpg http://www.hostingpics.net/viewer.php?id=951506DSC01919.jpg Quote Link to comment Share on other sites More sharing options...
Uzumaki Posted June 15, 2014 Share Posted June 15, 2014 fried RIOT chip? I don't have a Gemini schematic handy and the numbers and layout is quite different but I think the RIOT is the large chip on the lower right side. Check for broken traces. If there are no broken trace, you could try desoldering the chip, adding a socket (to make swapping easy) and installing a good RIOT chip from another 2600. I'm pretty sure Coleco kept the pinout the same. Quote Link to comment Share on other sites More sharing options...
Mellotron Posted June 15, 2014 Author Share Posted June 15, 2014 Okaaay... Unfortunately I'm not the kind of person that has multiple 2600's I could take parts from...I only have 1x working Atari 2600 and 1x working ColecoVision Expansion Module #1. But if the RIOT chip is fried, wouldn't the game show up at all? Because I thought the RAM was inside the RIOT... Quote Link to comment Share on other sites More sharing options...
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