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| Ummon:
Okay. In troubleshooting a video issue I've been having on my candy with a PC connected, via a JPAC, I disconnected that and connected back the Tetris board that came with the cabinet. The power supply started up. What? Why? I dunno. Okay, I guess it works now. While I was thinking about it, I disconnected the audio coupling from the 'stereo' jack and reconnected it to the 'mono'. Audio! Well, okay, now I know the audio amp works. Great. Controls work, too. Well, that's always nice. Now's where the juju gets weird. Half-way through a game of Tetris, the graphics start to go wacky - the image turns to sort of like a half silhouette - the power supply fan runs faster, and then the graphics gets jumbled and the game resets. question 1: does this just sound like a funky PS? question 2: okay, the audio amp works. Apparently the JPAC doesn't make it turn on, though. How do I easily bridge that gap so's I have sound for Mame? |
| swamprat96:
Re sound from ultimarc What about sound? The JAMMA standard is for only one speaker, mono sound. This is one of the reasons the J-PAC does not contain a sound amp. Other reasons are: There is no readily available 12V supply. Using the available 5V supply would not enough power. Using a separate mains adaptor would create issues with local line cord types. How do I wire for sound? There are several easy ways to do this: Use a sound card with an on-board amp. Either wire this to the speaker connectors on the J-PAC to use the cabinet speaker via the JAMMA connector or by-pass the J-PAC and wire directly to one or two speakers in the cabinet. OR: Use a set of mains powered PC speakers. Either remove the speakers from their cases and mount in the cabinet or simply place inside the cabinet. This will give the advantage of power stereo sound. |
| Ummon:
You're not understanding what I said. This cabinet has a special stereo amp that has rca plugs for a board that has stereo sound coming out of it. Or, you can not connect them and get mono through the edge connector. Anyways, I'm still not sure what's going on with the power supply, and I'm following that in my old audio amp toasted thread. So I guess this thread isn't necessary. |
| Ummon:
Well, I finally got this mostly done, front end set, games playing, instant shelled (yes, this is the absolute last thing you want to do if you can help it). Looks pretty good. Here's a (rather long, but perhaps enlightening...maybe evening amusing) video on my recent efforts. (By the way, it's a little NSFW due to expletive language.) Um, yeah. New (and tamer) one below. |
| Malenko:
your video was removed by youtube because it was more then 10min long |
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