I was just playing a game on my Neo 29" a while ago and in the middle of the game the sound went out. Anyway after I finished, I turned it off and unplugged the JAMMA harness from the PCB and when I connected it and turned it on again still no sound. Thinking maybe it's just the board and hopefully not the cab, I put in another PCB and low and behold this time it won't even show anything but a completely black screen. OF ALL THE LUCK!!!! What is going on?? I've had the cab for almost 5 years now. This is the first time this has happened as it has been working quite fine all this time. I don't even overuse the cab as I play on it once in a while and sometimes goes for months without playing. And other than the times that I'm playing it, it just sits there turned off and unplugged from the wall socket. Anyone have any ideas? I am not a technical person so I have these questions: 1. Is it fixable? 2. Will it take a lot of work? Man I really hope it's fixable and would hate to be stuck with a cab that I can't do anything about!!!! I've also posted this on Neo-Geo.com just to see what they have to say as well.
So on one PCB the sound wont work anymore and on another you dont get a picture BUT the sound does work? Tried multiple times? Sounds like a loose connector here or there, or powersupply thats dying.
No, on the second one there is no picture AND no sound. Nothing. It's just a complete black screen. But the machine is indeed on because the light on top where it says MVS and the Neo Geo logo right below (in other words where the marquee is supposed to be) are on. So that part is on but the screen is complete black and no sound at all just a little static. And yes I tried multiple times on both boards. Like I said it just got progressively worse. On the first board as I was playing the first time the sound just went out and kept trying it on and off and no sound. Then I switched boards and it turned to a completely black screen. And I tried it a few times as well and it was just completely black all the time and didn't improve. Anyway I would just like to know what people think. First of all if this is a fixable problem.
5 years old, I'd check the power supply. Maybe it's dieing and supplying insufficant voltage or something. The power supply going bad would make sense as they don't last forever and it could result in sound going out and then both getting no sound or video. I think when you try to fix these things it really is just observing details like these and trying to change those things and seeing if it works. So if possible, replace the power supply and see if that helps. I'm sure whatever the problem is, it is fixable.
