Hi everyone, I'm new here but I am a long time Atari collector and have always wanted to join this forum. anyways, I have an issue on my hands in the form of a beat up 4-port 5200 I just picked up. I got this thing for 5$, it came with the controllers and console, that's it. I don't have any more 5200s so I had to buy a switch box and a power supply. I just got all that in today and tested it, and I'm getting nothing, no sound, and no video. I already measured the supply and it looks good and the switch box seems to be outputting the correct voltage and has a reassuring spark. I heard something about different 5200s using different power supplies, I bought one that says 9.3 VDC (I hope that's ok.) I just don't know what to test next or where to go, the red led doesn't even light up when I turn it on. the switch is really gummy but I don't know which points to jump to bypass it. please help with my 5200, thanks!