Phoenix issues

CrazyKongFan

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I bought some untested boards recently, and finally got around to hooking one up. One is a Phoenix board, but I don't know if it's legit or bootleg. When it comes up, it says "GGI CORP" or something like that, and looks identical to a Centuri board. It's labeled TIM-8001 on the board. It's the same pinout as Crazy Kong (except the SPKR ground and SPKR + are opposite and no shield button). I don't get any sound though. My speakers are wired directly off the edge connector harness, so it's not tied to common ground. Is there a positive and ground on an actual speaker? (I didn't think there was) Any ideas on what to look for? I see some people have had problems with the 4600 chip for sound, luckily it's socketed. I did pop it out and reseated it just in case there was some corrosion, with no changes. A couple other issues, for some reason, player 2 side doesn't seem to work. It flips the screen in cocktail mode, but the controls don't do anything (they work on Crazy Kong, so I know they're wired up right). Also, when I boot up the board, most of the time it look scrambled, but sometimes it syncs up right. Is there something on the board that might be flaky to control that? I can't find any controls on my monitor to adjust it to fix it. Crazy Kong never comes up scrambled. Thanks for any insight :)
 
OK, found out why player 2 side wasn't working. When I wired up the player 2 controls to the harness, I used one of the grounds in the center of the pinout, which worked fine for Crazy Kong, but apparently Phoenix didn't have a ground there. I also recently got a Falcon Puckman board (hacked to run Ms Pac-Man) that also uses the same pinout and it didn't work on player 2 side either. I moved that ground wire to one of the 3 grouped at the end of the edge connector and now player 2 works on both. Still haven't got sound though. I've heard people had problems with the sound pot, and also a chip labeled "4600"...does anyone know a source for those? 4600 is too generic to do a google search on. I'm gonna try replacing the pot first though.
 
Actually, i think it's a 4006. At least there is one on the Phoenix PCB I was working on yesterday, right near the volume pot and the LM324 op-amps...
 
oops, you're right...just went downstairs and checked mine, it was 4006...guess I got dyslexic there...That may help me find it a little better :D
 
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