Gunblade NY computer wont start

dextrolite

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Im working on a Gunblade NY (projector monitor cabinet) for a friend. The game doesn't appear to start at all. The monitor portion is shot, which I'm not too concerned about for now. But I'm not getting any sound. I opened the computer cage to check the indicator leds. The two green lights come on and thats about it. From the other sega machines I've worked on, I would have assumed the red lights would be flashing if it work actually running.
The cabinet has a happ power supply in it, and I have good voltage coming out of it. Also, I did try reseating the ICs and the individual boards.

If anyone has a suggestion as to what to do, Id appreciate it.
 
after a few minutes it starts making the attract sound. I can coin it up, but as soon as I press either start button, it dies.
 
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