I would say that you either have a faulty game eprom or prom OR a bad socket with a floating pin. Can you borrow an MPU from another game or a friend to confirm?
Or tone out the chips/sockets on your faulty MPU?
(Topic ID: 199197)
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Fireball Classic
Bally, 1985
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1 week later
Quoted from phil-lee:Charging camera battery.
(Player 4 Display is non-functional since I bought it,normal)
Turn on
1 zero in Player one
2 zero in Player 2
4 zeros in Player 3
Game Over light
High Score to date light
Player one goes to "7" and 1 zero when warm
High Score to Date flashes 6 million,then back to 7 and 2 zeroes in Player 1
High Score to date then flashes 7 million and 2 zeroes in Player 1
Start game
High score to date light stays on
player 3 has 4 zeroes
player 2 dark
Ball drains
Tilt flashes
Game over flashes
stays on ball one
Unplug the player 4 display! Sounds like it may be shorted. If your displays are not working properly, it makes using most of the test modes nearly impossible.
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