Okay, so I finally got around to finishing my Supergun! Early version(partially working) - Full Version (fully working! ish) - Okay, so its a piece of shit But it works! Sortof. I'm having a minor sound issue now. Ever since I've set up the controller port, the soudn has been crackling. Checked the wiring and insulation, no problems. Checked the harness. Turned sound on/off on the game board. Any idea? I cannot check with another board as my other board isn't working. Which is my next question! My other PCB is Street Fighter 2: Championship edition. Now, it was working when I got it....but now it goes in/out of working. It powers up, but the display is garbled. The few times it boots fine, it resets or crashes after the character select. Is the bored just fscked or could it maybe be a power issue? (using an old 350 watt AT power supply).
For sound, maybe your Speaker + and - are backwards? Or maybe you need one of them line something or other circuits I've heard about. The board (what board is it anyway?) may be amping the sound and perhaps your sound output is also amping it which could cause distortion I believe. With SF2, it was working on your supergun fine before? And now it's having problems? Or it worked in a cabinet but now on your SG it doesn't? I don't know if this could be possible, but do you have the board in direct sunlight ever? If any of the ROMs are EPROMs the UV rays could have eventually erased bits of the ROM and it only takes 1 bad bit to make a program crash. I would suggest getting a fresh power supply if the PSU is particularly old. You really shouldn't cheap out on something so important and potentially dangerous. I'm gonna be building my own SuperGun soon. I hope everything goes well. I've got most everything but the harness and misc wiring things. I hope everything goes smoothly for me.
The board is "History of Martial Arts". The + and - are the right way, and it cannot be an amp issue as the sound goes directly to a speaker (no amp). What I have noticed is that the longer its running, the worse it gets (I turned it on this morning and the sound was crisp and clear). You think I maybe need a better speaker? (it was a cheap thing)
Eh? No amp? How would the speaker get any sound? Are you perhaps mistaking what he meant? He meant the amplifier CHIP on the board. I'd certainly be looking at the amp, if I were you.
I thought he meant was I feeding the amplified sound from the board into an external amplifier then to my speaker. I've fiddled a bit with the pot' that controls volume and found out if I turn the volume down lower, it the crackiling mostly disapears. It still comes back after an hour or so though(but History of MArtial Arts is shite and I hardly play it as is, lol).
