31336haxx0r Posted November 26, 2011 Share Posted November 26, 2011 Chaps, I have a Darth Vader 2600 here that is in a really great shape but exhibits video issues. The screen is correctly displayed but with a lot of tiny white dots everywhere, just like static. IIRC there was a fix for that, like changing some capacitors. Can anyone point me in the right direction? Is there a how-to anywhere? Thanks! Quote Link to comment Share on other sites More sharing options...
Benzman66 Posted November 26, 2011 Share Posted November 26, 2011 The usual fix is replacing the green "chicket" looking capicitor which cures the warped/thumbprint screen look, but from what you are describing, it sounds more like a RF cable issue. I would swap out the cable and try that first. BTW, if you are using an old style switchbox, that might be the main cause of your problem! Try a RCA to F type connector available at Radio Shack. Quote Link to comment Share on other sites More sharing options...
AtariLeaf Posted November 26, 2011 Share Posted November 26, 2011 If your 2600 is full of static, I'd recommend a good dryer sheet. I prefer Bounce myself. Quote Link to comment Share on other sites More sharing options...
31336haxx0r Posted November 26, 2011 Author Share Posted November 26, 2011 I did have indeed a switchbox in between. I will try it without it next time and using different cables to find out if anything's wrong there. I found your green cap thread and immediately took a look at the various 2600 PCBs scattered around here. None of them have such a cap, but rather a smaller one that looks like a diode. It's labeled C241 and goes from the ground plane to the input of the 7805 voltage regulator. Didn't know the 2600 was so picky about that. If that's the case, I'll not only change that thing and also add a 0.1 µF cap from ground to the output of the 7805 regulator, as shown in the application note... I'll give it a try and report back! Any other hints? Quote Link to comment Share on other sites More sharing options...
Schizophretard Posted November 27, 2011 Share Posted November 27, 2011 Get one of these. eBay Auction -- Item Number: 150582474183? The box filters interference. Quote Link to comment Share on other sites More sharing options...
31336haxx0r Posted November 27, 2011 Author Share Posted November 27, 2011 I wonder if it's just a capacitor in there to decouple stuff. Hm. Quote Link to comment Share on other sites More sharing options...
Benzman66 Posted November 27, 2011 Share Posted November 27, 2011 I did have indeed a switchbox in between. I will try it without it next time and using different cables to find out if anything's wrong there. I found your green cap thread and immediately took a look at the various 2600 PCBs scattered around here. None of them have such a cap, but rather a smaller one that looks like a diode. It's labeled C241 and goes from the ground plane to the input of the 7805 voltage regulator. Didn't know the 2600 was so picky about that. If that's the case, I'll not only change that thing and also add a 0.1 µF cap from ground to the output of the 7805 regulator, as shown in the application note... I'll give it a try and report back! Any other hints? C241 is the correct one, but there shouldn't be a diode in there. Maybe that's the problem. It should have a cap. I use a 224K100V in all the units I repair. They are a little bigger like the ones used in the six switch units Quote Link to comment Share on other sites More sharing options...
31336haxx0r Posted November 27, 2011 Author Share Posted November 27, 2011 It just is in the package of a somewhat larger "glass diode", as I would call that package. It's still a capacitor. Quote Link to comment Share on other sites More sharing options...
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