55five66six Posted August 9, 2020 Share Posted August 9, 2020 Hi Everyone, it's been awhile since I've been on the forums! I've recently had a resparked interest in Atari stuff and started turning my attention towards a project I had laying around that I never got to. What I have is a Black Atari 2600 4 switch that I'm working on installing a composite video mod into. What prompted me to install a composite mod was not just because I wanted to get away from Coax. It was also because there seemed to be a problem with the video as well. About 5 years ago, someone gave me the suggestion of installing a composite mod and that it should fix the issue I was seeing. I forgot about until it lately and about 2 weeks ago, I got the bug to try the mod install. This is what I bought: https://www.thefuturewas8bit.com/deluxe-atari-composite-video-mod.html The picture I used as my guide is attached: This is the installation I did: When I run a game, this is what I see: Part of me is wondering if the TIA is hosed. I don't know how common that is, but looking at the main board, there doesn't seem to be much that COULD go wrong in the unit. I'm pretty surprised as to how simple it is. ? Any ideas of what I might be missing? Am I'm that far off with thinking the problem could be the TIA? If that's the case, is there a place I could get another one? Quote Link to comment Share on other sites More sharing options...
Steve Guidi Posted August 9, 2020 Share Posted August 9, 2020 This is just a guess, but could this lack of colors be related to a PAL/NTSC mismatch? Quote Link to comment Share on other sites More sharing options...
55five66six Posted August 9, 2020 Author Share Posted August 9, 2020 No, it's all NTSC. The game, the console, and my TV. Tried multiple TVs too. Quote Link to comment Share on other sites More sharing options...
55five66six Posted August 9, 2020 Author Share Posted August 9, 2020 Going to try a recap. The large 2200uF looked a little suspect. I found a site that has recap kits - https://console5.com/store/atari-2600-junior-refresh-cap-kit-new-capacitors-and-more.html I'll reply back with how it goes for anyone in the future that has the same issue as me. Stay Tuned.. Quote Link to comment Share on other sites More sharing options...
Lohe Posted August 12, 2020 Share Posted August 12, 2020 You did a PAL AV installation, but have a NTSC console? The picture you posted is for PAL consoles. Quote Link to comment Share on other sites More sharing options...
55five66six Posted August 14, 2020 Author Share Posted August 14, 2020 (edited) On 8/12/2020 at 1:55 PM, Lohe said: You did a PAL AV installation, but have a NTSC console? The picture you posted is for PAL consoles. Apologies for that. I selected the wrong picture.. This is the place I used for the installation.. http://blog.tynemouthsoftware.co.uk/2018/09/atari-2600-ntsc-4-switch-composite-video-mod.html The picture I should have used is this.. Although both pictures look the same... I will say that the picture looks somewhat better.. I used Console5 for the cap replacement. I got the caps, did the replacement and the above is what I'm seeing now. I'm thinking I may replace the TIA next to see if that could possibly be the issue. I can't think of anything else being the culprit outside of the color pot, which does seem to work, just the color is hideous as you can see and we have the blocks/lines everywhere. Edited August 14, 2020 by SoilentGreen Wrong picture. Quote Link to comment Share on other sites More sharing options...
55five66six Posted August 15, 2020 Author Share Posted August 15, 2020 Working on getting a new TIA, 6507 and RIOT through Best Electronics.. I"ll update when I've received and replaced. Quote Link to comment Share on other sites More sharing options...
Lohe Posted August 15, 2020 Share Posted August 15, 2020 Quote Link to comment Share on other sites More sharing options...
55five66six Posted August 15, 2020 Author Share Posted August 15, 2020 So, I thought that too originally, but the white wire is for audio which is actually working. Quote Link to comment Share on other sites More sharing options...
Lohe Posted August 15, 2020 Share Posted August 15, 2020 Hm, didnt know you could just leave some parts on the PCB and those parts wont affect the video signal at the end. Perhaps someone else can have a look on the layout for the parts you left on the PcB and if they can stay there, but should desoldered by the installation pic for NTSC I posted earlier. I dont have a layout of NtSC consoles currently. But I know those tiny wires. Make sure, there is everything in its solder point and nothing is shorted by a tiny wire of the wire itself (magnifying glasses). Quote Link to comment Share on other sites More sharing options...
stuartmcivor Posted January 24, 2021 Share Posted January 24, 2021 On 8/14/2020 at 11:04 PM, Lohe said: Shouldn't the audio connection, they grey wire drawn into the picture, be over one component to the left on the resistor? Quote Link to comment Share on other sites More sharing options...
ScooberDiver Posted July 31, 2021 Share Posted July 31, 2021 On 1/23/2021 at 9:18 PM, stuartmcivor said: Shouldn't the audio connection, they grey wire drawn into the picture, be over one component to the left on the resistor? I see a trace connecting the two components. Quote Link to comment Share on other sites More sharing options...
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