Thanks to AA user madman, I got some games and can confirm that the 5200 works! I got a lot of RF noise (audio), but it played fine. I did a bunch of testing. One of my sticks seems to have a set of mostly working buttons, the other works, but the side buttons do not. I couldn't confirm if the lower side buttons worked at all. I think the number pad buttons work just fine on both. The start button on one of them was kinda touchy.
Anyway, it seems that its fairly easy to fix the side buttons with some foil or other conductive thing. I'll probably give the insides a once over here soon and I expect to have 2 working sticks. Is there a nice walkthrough someone could link for me that shows how to disassemble the sticks - I've heard its not really that straightforward.
I also recently picked up a 2600 adapter that doesn't seem to work right. I have a 2 port 5200 so it should be compatable right? When I put it in with a game, I get various distorted images - Superman for instance just gives me about 6 solid red verticle bars about an inch in width. Megamania gave me thin wavy diagonal lines and Combat gave me a complete black screen. Does anyone know what behavior you get if you try to use the adapter in a non-compatable 5200? Is it similar to what I'm seeing? Turning it on with no game shows a lot of mixed up colored garbage seems like it was mostly blue and yellow. I was surprised that you could insert the adapter oriented multiple ways - hopefully there is no harm to doing that because I tried it
Edited by wongojack, Sun Dec 11, 2011 12:10 PM.