Space Invaders - No sound

DaveyPocket

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So I wired up my space invaders motherboard, and I get sound. My current setup is all over the floor (I'm testing everything). I don't have a coin mechanism, so what I do to insert a coin is use a wire to connect coin 1 to ground. I accidentally shorted two of the wrong pins, I saw a spark. From there on I got no sound. Before this happened, whenever I powered off the main, the speaker made some weird pop and fuzz noises(static and other stuff). Now, nothing comes out of the speaker. I'm not sure what's wrong. If knows what the problem is, please help. Thank you.
 
Did you blow any fuses?, my guess would be the 12v fuse is gone, but it has been a while since I had to work on mine.
 
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