CapitanClassic Posted August 10, 2020 Share Posted August 10, 2020 I just bought a used Atari 2600 system. It only came with one game, so I cannot troubleshoot the game itself being defective. I also cannot seem to find a relevant thread that has the same issues. I have cleaned all the contacts and switching the power on normally results in a diagonal white line that scrolls across the screen. Every once and a while I get colored bars (assuming something altered PF0-PF2 or the player sprites.) Sometimes I get a blank black screen, so it is sending a signal to the TV. Very rarely do I get a screen that could almost look like Combat playfield (but it definitely isn’t). Also, should Combat be missing a trace on the front (Pin 8/Pin 5? Or maybe the backside is pins 1-12, so pin17/pin20). What is the next thing to troubleshoot with these symptoms? Do I have a bad TIA or RIOT? Do I need to do a recap sooner rather than later to prevent any exploding capacitors? Quote Link to comment Share on other sites More sharing options...
BioButt Posted August 21, 2020 Share Posted August 21, 2020 I have a similar problem. I have replaced the caps and the power regulator (reads 5.0 VDC on the output but 15 VDC on the input, across the 2200 uF cap and the power supply). I even replaced the power input jack (got the kit from Console5.com). Not sure what it is. Doesn't look like anyone has responded with ideas Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted August 21, 2020 Share Posted August 21, 2020 Get another cartridge to test with - that Combat doesn’t look right (though my several copies are upstairs at the moment so I can’t compare). But the fact that you’re getting a picture at all eliminates lots of components from immediate concern. So get a known-good cart from a friend or local retro shop to test with and then go from there. Quote Link to comment Share on other sites More sharing options...
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