Battlezone Question

I have a boardset that works perfectly except for one strange thing.
Normally in the red area where you see the score and warning messages, you
don't see things like exploding tank parts, missiles dropping out of the
sky, the screen cracks, etc. On this board you can see everything in the
red area. Although it looks pretty cool, I'm wondering what part of the
circuitry limits the playground area and the score/messages area? It seems
like there should be some "Y" limitation. I notice that the screen gets
really bright in attract mode right before the Battlezone logo scrolls up.
Which means to me the beam is already turned on before the Battlezone logo
is visible on the screen. Maybe a bad counter? Matt

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Received on Thu Mar 12 02:50:47 2009