This was another DOA, but after following the Electrohome GO7 trouble-shooting chart, the problem was narrowed down to a bad capacitor. Cap-kit installed via Bob Roberts. :o)
Another problem was the game basically just freaked out upon power up. Various sounds would play and random graphics would appear on the screen. These were all fixed by just reseating all the socketed chips. (this kind of fix always amazes me)
I was working on it and removed them and what did I see? I saw a very minty control panel and extremely nice marquee. Man, they almost look too good to leave unprotected.