Monaco GP mini glitches

Vectorman

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Are there any Monaco GP experts here?

I am trying to get one fully working for the Game-on 2.0 exhibition in Tasmania. Two glitches:

1) When the car goes into "screech" mode (driving near the edge of the road), the car "sprite" turns into a bunch of white lines.

2) The top right segment in 6 of the score displays is always blank.

Any clues? I can provide more info if you ask specific questions. Thanks for whatever help you can provide.

I'm stuck....

Thanks,
John
 
Top segment is the "A" segment, pin 7 on those displays...

Could be a shorted segment in that stack, or a bad resistor on that line, or a bad 75468, or a bad 7448...

The schems for the LED driver board are actually quite good...
 
Thanks HudsonArcade....so is the top right segment the "F" segment?

I don't have schematics with me. I found some online, but they are tough to read. I'll look closer...

John
 
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