Help with Stargate

killerbrew

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Okay. I got a Stargate for a project and have gotten everything worked out with it. I'm stuck with one issue and I'm pretty sure it's a simple fix. Hopefully, someone who is much smarter than myself can explain what i'm missing.

I have changed it to a switcher with the arcadeshop converter. The power supply board was missing. All the voltages are correct and the game boots up into attract mode with no issues. The problem is the sound will go through all of the sound in the test mode but when starting it plays for like 1/2 second and then nothing. It won't coin up and the test buttons don't do anything.

Thanks in advance for hints, suggestions, and help!
 
Try reseating all of the socketed chips on the boards if you haven't already.

I have done that and no change.

@MajorHavoc - I'm not exactly sure. The sound test works great when the button is pressed on the sound board but, when I start the game up it plays about 1/2 of a second of sound and then stops. I'm also (seperate issue I believe) having an issue where it won't coin up. I am not sure what is causing it. I've tested voltages and all seems to be good. The only thing that I can think of is that I haven't tried yet is continuity in the coin door harness.
 
I have done that and no change.

@MajorHavoc - I'm not exactly sure. The sound test works great when the button is pressed on the sound board but, when I start the game up it plays about 1/2 of a second of sound and then stops. I'm also (seperate issue I believe) having an issue where it won't coin up. I am not sure what is causing it. I've tested voltages and all seems to be good. The only thing that I can think of is that I haven't tried yet is continuity in the coin door harness.

AFAIU, the sound test button is it's own test on the sound board that does not communicate with the rest of the boards. You have to power down and power up to get the sound board out of that test mode.

The video is working OK?

Have you checked the +5V on the I/O board? If it is OK, manually ground the coin/credit pins and then one of the start pins. What happens? Trying to isolate whether your control problem is the control panel wiring or something else.
 
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