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Atari 2600 standard AV mod compatiblity issues with Harmony Cart?


bszarek001

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Hi everyone - hoping someone has experience with this. I did a standard composite mod and it works perfectly. Nice video, 5v at all checkpoints, including TIA, RIOT and 6507. All of the standard carts including some modern home brews work fine. When I plug in my harmony cart, I get solid colors, sometimes with loud screech noises. Once in a great while I can see a few lines of text, then it goes to black. Ive replaced the riot and tia chips and same results. Anyone have any ideas as to why this is happening? The harmony cart works fine with all my other systems.

 

Thanks in advance.

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Not sure it is completely related...but I see you are working on a sixer...so..might give this simple thing a try?

 

http://atariage.com/forums/topic/232964-stay-frosty-2-doesnt-work-on-six-switchers/page-2?do=findComment&comment=3138247

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