Hey everyone! I am new to this arcade owner/restoration thing, so please go easy on me if I am calling anything by the wrong name.
I bought a SI Midway Cocktail game and have a coin up and audio problem I just can't figure out. I searched the forums for similar problems, but didn't find anything that worked. Here's what's going on...any help would be greatly appreciated!
1. Machine wont coin up. I have cleaned all motherboard connections and EPROMs. I tested the signal to the coin up connections and they appear fine. I'm starting to wonder if it's the actual mechanism with the arm that is moved down when a quarter hits it that is fried. The counter moves, the game just doesn't register a credit. Any ideas? Anyone know where I can find more information on that part? All the manuals and instructions I could find don't have any info on it.
Note: I do have two wires that appear to have been cut near where the lock used to be n the coin door. They're near a sticker that reads "vibration switch. operates game over circuit when closed". One is solid yellow and the other is solid black. Am I right in thinking this isn't part of my coin up problem? Again, I haven't been able to find much info on what this could be.
2. No sound. I have checked the audio connection voltages at the motherboard and they are receiving power in the correct voltage range. I have tried adjusting the pot on the board, but no change. I'm not sure how to check that pot (my knowledge of electronics and boards I'd say is on the lower side of average) and my soldering skills aren't super great, so one post on here where someone said they removed it and tested it didn't seem like a great idea for me.
If anyone has any ideas I'd greatly appreciate it. I can also provide any pictures if anyone would like to see something or if I didn't explain myself well enough.
Thanks in advance!
1. Machine wont coin up. I have cleaned all motherboard connections and EPROMs. I tested the signal to the coin up connections and they appear fine. I'm starting to wonder if it's the actual mechanism with the arm that is moved down when a quarter hits it that is fried. The counter moves, the game just doesn't register a credit. Any ideas? Anyone know where I can find more information on that part? All the manuals and instructions I could find don't have any info on it.
Note: I do have two wires that appear to have been cut near where the lock used to be n the coin door. They're near a sticker that reads "vibration switch. operates game over circuit when closed". One is solid yellow and the other is solid black. Am I right in thinking this isn't part of my coin up problem? Again, I haven't been able to find much info on what this could be.
2. No sound. I have checked the audio connection voltages at the motherboard and they are receiving power in the correct voltage range. I have tried adjusting the pot on the board, but no change. I'm not sure how to check that pot (my knowledge of electronics and boards I'd say is on the lower side of average) and my soldering skills aren't super great, so one post on here where someone said they removed it and tested it didn't seem like a great idea for me.
If anyone has any ideas I'd greatly appreciate it. I can also provide any pictures if anyone would like to see something or if I didn't explain myself well enough.
Thanks in advance!

